Quality and Technical Supervision Bureaus (Market Supervision and Administration Departments) of all provinces, autonomous regions, and municipalities directly under the central government:

In order to implement the requirements of simplifying administration and delegating power in the transformation of government functions, further improve the safety supervision of pressure pipeline gas cylinders, and in combination with the newly revised "Catalogue of Special Equipment" (hereinafter referred to as the "Catalogue") and the "Technical Supervision Regulations for Gas Cylinder Safety" (TSG R0006-2014, hereinafter referred to as the "Regulations"), the opinions on the safety supervision of pressure pipeline gas cylinders are hereby notified as follows:

1、 Issues related to safety supervision of pressure pipelines

（1） Regarding the scope of pressure pipeline media in the new Catalogue.

The definition of pressure pipelines in the new Catalogue refers to pipelines that transport non-toxic, non flammable, and non corrosive gases with a nominal diameter less than 150mm and a maximum working pressure less than 1.6MPa (gauge pressure), excluding liquefied gases, steam, and oxygen.

（2） Regarding the categories and varieties of pressure pipeline components in the new Catalogue.

The nominal diameter of pressure pipeline components included in the new Catalogue should be greater than or equal to 50mm.

1. The term "ductile iron pipe" in the new Catalogue does not include cast iron pipes of other varieties;

2. The new Catalogue adds the variety of "composite pipes", which specifically includes three categories: metal to metal composite, metal to non-metal composite, and non-metal to non-metal composite;

3. Typical products of the "metal valves" in the new Catalogue include: pressure regulating valves, regulating valves, gate valves, ball valves, butterfly valves, globe valves, check valves, drain valves, diaphragm valves, throttle valves, plug valves, plunger valves, low-temperature valves, pressure reducing valves (self operated), spectacle valves (valves for metallurgical industry), orifice valves (valves for metallurgical industry), drain valves, temperature reducing valves, pressure reducing valves, etc;

4. The variety of "rotary compensators" in the new Catalogue does not include the "special type metal expansion joints" in the original Catalogue;

5. The new Catalogue does not include the varieties of "cast pipe fittings", "manifolds", "filters", "special type metal expansion joints", "metal corrugated pipes", "fasteners", "flame arresters", as well as "pressure pipeline supports" and "pressure pipeline materials" from the original Catalogue.

（3） Regarding the manufacturing license for pressure pipeline components.

The cast iron pipes, non-ferrous metal and non-ferrous metal alloy fittings, cast fittings, pipe joints, metal hoses, spring supports and hangers, fasteners, manifolds, busbars, filters, flame arresters, other component combination devices (decontamination devices, mixers, buffers, condensate (water) cylinders, insulation joints), low-temperature insulation pipes, directly buried jacket pipes, valve castings, forged flange blanks, forged fittings, forged valve body forgings, pressure pipeline pipe special steel plates, polyethylene pipe raw materials, polyethylene composite pipe raw materials, polyethylene pipe raw materials, polyethylene pipe raw materials, polyethylene composite pipe raw materials, etc. listed in the "Pressure Pipeline Component Manufacturing License Rules" (TSG D2001-2006) licensing items and level table are not included in the new "Catalog". Scope: Manufacturing the above-mentioned pressure pipeline components no longer requires obtaining a special equipment manufacturing license.

The new Catalogue categorizes emergency shut-off valves as safety accessories, and the General Administration is responsible for implementing manufacturing licenses without further classification. However, the product parameter range should be limited, and the licensing conditions should temporarily follow the licensing requirements for valves in the Pressure Pipeline Component Manufacturing License Rules (TSG D2001-2006).

The manufacturing license level varieties of pressure pipeline components within the scope of the new Catalogue are shown in Annex 1.

（4） Regarding the supervision and inspection of pressure pipeline component manufacturing.

According to the Notice of the General Office of the General Administration of Quality Supervision, Inspection and Quarantine on Suspending the Implementation of the Supervision and Inspection Rules for the Manufacturing of Pressure Pipeline Components (Special Letter [2013] No. 583 of the Quality Supervision Office), the implementation of the Supervision and Inspection Rules for the Manufacturing of Pressure Pipeline Components (TSG D7001-2013) has been temporarily suspended. However, submerged arc welded steel pipes and polyethylene pipes should continue to undergo manufacturing process supervision and inspection in accordance with the "Supervision and Inspection Rules for Manufacturing of Pressure Pipeline Components (Submerged Arc Welded Steel Pipes and Polyethylene Pipes)" (TSG D7001-2005).

（5） Regarding type testing of pressure pipeline components.

When pressure pipeline component manufacturing enterprises renew their certificates, they should, in principle, conduct type tests again. If the certificate renewal enterprise has completed the type test of the relevant products in accordance with the current safety technical specifications and standards, and the parameters, structure, and process of the relevant products have not changed, and supervision and inspection are required according to the safety technical specifications, and the manufacturing process supervision and inspection have been implemented, the type test can be exempted when renewing the certificate.

（6） Regarding the installation of pressure pipelines.

Units holding a pressure pipeline installation license can install pressure vessels or complete boilers connected to them while installing pressure pipelines, and installation supervision and inspection shall be carried out by qualified installation supervision and inspection agencies.

When the total length of the connecting pipeline between the boiler and the heating equipment is less than or equal to 1000 meters, the boiler and its connected pipelines can be installed together by the unit holding the boiler installation license, and the installation supervision and inspection organization with corresponding qualifications can carry out installation supervision and inspection together, and the use registration can be processed together with the boiler. When the total length of the pipeline exceeds 1000 meters, the pipeline connected to the boiler must be installed by a unit holding a pressure pipeline installation permit, and a separate registration for the use of the pressure pipeline must be processed.

（7） Regarding the combination device of pressure pipeline components.

The variety of "component combination devices" in the new Catalogue refers to devices that weld pressure pipeline components such as pipes, valves, fittings, flanges together to have a certain function. At present, only manufacturing licenses are issued for wellhead devices, Christmas trees, throttling and killing manifolds, gas pressure regulating devices, and temperature and pressure reducing devices.

Units holding a D-class pressure vessel manufacturing license or a gas pressure regulating device manufacturing license can assemble and install pressure pipelines in natural gas injection devices. The pressure vessels in the device should be manufactured by a pressure vessel manufacturing unit holding the corresponding level. If the natural gas injection device includes a pressure vessel and the total length of the pressure pipeline is less than or equal to 10 meters, it can be registered for use together with the pressure vessel; If the total length of the pressure vessel or pressure pipeline exceeds 10 meters, a separate registration for the use of the pressure pipeline should be processed.

（8） Regarding the registration of pressure pipeline usage.

The registration of the use of long-distance (oil and gas) pipelines and public pipelines has been included in the scope of administrative licensing reform. The General Administration and local quality supervision departments have suspended the registration of the use of long-distance (oil and gas) pipelines and public pipelines. Industrial pipelines still need to be registered for use in accordance with the "Management Rules for Registration of Pressure Pipeline Use" (TSG D5001-2009).

（9） Regarding the supervision and regular inspection of pressure pipelines.

According to the provisions of the Special Equipment Safety Law, supervision and inspection should be carried out on the installation process of pressure pipelines, and regular inspections should be carried out on pressure pipelines in use. Inspection agencies approved by the General Administration of Quality Supervision, Inspection and Quarantine with corresponding qualifications for pressure pipeline inspection can accept invitations from installation or use units to supervise and inspect the installation process of pressure pipelines or conduct regular inspections of in-service pressure pipelines, issue inspection reports, and be responsible for the inspection conclusions.

Inspection agencies with the qualification for regular inspection of pressure pipelines can undertake the evaluation of their suitability for the use of pressure pipelines and be responsible for the evaluation conclusions; Inspection agencies with RBI inspection qualifications can undertake risk-based inspection (RBI) of pressure pipelines.

When conducting regular inspections of long-distance (oil and gas) pipelines and public pipelines, inspection agencies may, as needed, conduct risk assessments and risk-based inspections (RBI) on long-distance (oil and gas) pipelines and public pipelines in accordance with safety technical specifications and standards such as the "Periodic Inspection Rules for Pressure Pipelines - Long distance (Oil and Gas) Pipelines" (TSG D7003-2010), "Periodic Inspection Rules for Pressure Pipelines - Public Pipelines" (TSG D7004-2010), and "Risk Assessment Methods for Buried Steel Pipelines" (GB/T 27512-2011).

The quality supervision departments at all levels shall impose administrative penalties in accordance with the law for illegal acts of using untested or unqualified pressure pipelines.

（10） Regarding the approval personnel for pressure pipeline design.

When the pressure pipeline design appraisal and review institution organizes the assessment and certification of pressure pipeline design approval personnel in accordance with the "Design License Rules for Pressure Vessels and Pressure Pipelines" (TSG R1001-2008), the relevant assessment plan and results no longer need to be submitted to the General Administration of Quality Supervision, Inspection and Quarantine for publication.

（11） Cancel the requirement for registered capital of manufacturing and installation units.

According to the reform requirements of the registered capital registration system, the requirement for registered capital of pressure pipeline component manufacturing units and pressure pipeline installation units in the licensing conditions has been cancelled.

2、 Issues related to safety supervision of gas cylinders

（1） Regarding the manufacturing license for gas cylinders and cylinder valves.

According to the adjustment of the classification of gas cylinder varieties in the new Catalogue, and based on the principle of reducing the number of permits and expanding the scope of permits, corresponding adjustments will be made to the types of gas cylinder manufacturing permits according to Annex A of the Regulations. The classification of gas cylinder license levels and varieties within the scope of the new Catalogue is shown in Annex 2, and the classification of gas cylinder valve manufacturing license projects is shown in Annex 3. At the same time, the requirement for registered capital in the manufacturing license conditions for gas cylinder accessories has been cancelled.

Portable dry powder fire extinguishers and portable water-based fire extinguishers are managed in accordance with the "Announcement on the Implementation of Compulsory Product Certification for Some Fire Products" (No. 12 of 2014), and the cylinder body for manufacturing their welded structure does not require a gas cylinder manufacturing license. Manufacturing other fire extinguishing gas cylinders still requires obtaining a cylinder manufacturing license.

（2） Regarding the manufacturing and inspection of welded insulated gas cylinders.

1. Requirements for symbol marking of the medium contained in the outer head.

To learn from the lessons of accidents and prevent the misuse of welded insulated gas cylinders, manufacturing enterprises of welded insulated gas cylinders should, in accordance with the provisions of 1.14.1.3 of the "Cylinder Regulations", press the obvious protruding symbols such as "O2", "LNG", "N2O" on the outer head of the welded insulated gas cylinder containing liquid oxygen, liquefied natural gas, and nitrous oxide media for easy observation. The font height of large volume gas cylinders should not be less than 60mm, and the font height of medium volume gas cylinders should not be less than 40mm. For finished heads that cannot be pressed with medium symbols in inventory, enterprises should use other effective methods to engrave permanent medium symbols on the heads for easy observation. Inventory heads should be used up by the end of December 2015. Starting from January 1, 2016, manufacturers of welded insulated gas cylinders must use head products that comply with the regulations of the "Cylinder Regulations".

2. Product labeling requirements.

The welding insulation gas cylinder body should be labeled with corresponding product labels according to the filling medium, and the label style should be clarified by the national gas cylinder standardization technical organization.

3. Regular inspection requirements.

Before the national standard for regular inspection of welded insulated gas cylinders is issued, inspection agencies may conduct regular inspections of welded insulated gas cylinders based on local or enterprise standards, in accordance with Article 1.5 of the "Cylinder Regulations".

（3） Regarding the connection form and thread rotation direction of the gas cylinder valve outlet.

For the gas cylinder valve outlet directly used as the medium filling and discharging interface, its connection form and size should comply with the requirements of the "Cylinder Regulations" and relevant standards, and adopt a structural form that is conducive to preventing gas misloading and misuse. The valve outlet thread of combustible gas cylinders connected by threads should be left-handed, while the valve outlet thread for combustion assisting and non combustible gas cylinders should be right-handed.

The connection form and size of the gas cylinder valve outlet for vehicles may not be in accordance with the above requirements. The outlet of liquefied petroleum gas cylinder valves equipped with both gas and liquid phase valves should adopt different structural forms. The outlet of liquid phase valves should adopt a quick installation structure, while the outlet of gas phase valves should adopt a left-hand threaded structure.?

（4） Regarding the welding seam of gas cylinders.

The longitudinal and circumferential welds of the welded bottle body, as well as the pressure bearing welds connecting the bottle valve seat and the bottle body, shall be automatically welded in accordance with the provisions of 4.4 of the "Bottle Regulations"; The fillet weld of the valve seat (or plug seat) using full penetration or double-sided welding, as well as the weld connecting the connecting pipe on the insulated gas cylinder to the cylinder body, can be welded using other welding methods.

（5） Regarding non-destructive testing of gas cylinders.

According to Article 4.4 of the "Bottle Regulations", "Non destructive testing of seamless steel gas cylinders shall be carried out using online ultrasonic automatic testing (unless otherwise specified in the corresponding standards), and the testing scope shall cover all detectable parts...", where "all detectable parts" refer to the testing scope specified in the corresponding standards.

（6） Regarding the hydrostatic test of gas cylinders.

According to Article 4.9 of the Bottle Regulations, seamless gas cylinders (excluding small volume gas cylinders) should be subjected to hydrostatic testing using external measurement methods. At present, seamless gas cylinder manufacturing enterprises that use internal testing methods for water pressure testing should actively rectify and implement the installation of external testing equipment. Before the revision of GB5099-1994 "Seamless Steel Gas Cylinders", internal testing methods can still be used for water pressure testing. However, newly applied seamless gas cylinder manufacturing enterprises must comply with the requirements of Article 4.9 of the Bottle Regulations.

（7） Regarding gas cylinder markings.

The steel seal marking of gas cylinders (including nameplate marking, label marking, etc.) should be carried out in accordance with the content and arrangement format specified in Annex B of the "Cylinder Regulations". If there are indeed difficulties, the arrangement format can be adjusted appropriately, but the content and items should comply with the requirements of the Bottle Regulations.

Gas cylinder manufacturing enterprises should adjust the existing gas cylinder markings in a timely manner in accordance with the regulations of the "Cylinder Regulations". Starting from January 1, 2016, gas cylinder manufacturing enterprises shall use gas cylinder markings that comply with the provisions of the "Cylinder Regulations".

（8） Regarding the certificate of conformity for gas cylinder products.

The product qualification certificate shall indicate the name of the manufacturing unit and the manufacturing license number of the gas cylinder and the installed gas cylinder valve, except for gas cylinders for respirators, fire extinguishing gas cylinders, and gas cylinders without valves installed at the time of leaving the factory.

（9） Safety assessment of liquefied petroleum gas cylinders.

Gas cylinders manufactured in accordance with the GB5842-2006 "Liquefied Petroleum Gas Cylinders" standard have a design service life of 8 years as promised by the manufacturing unit. Liquefied petroleum gas cylinders that have reached the design service life can continue to be used for a maximum of one regular inspection cycle after passing the safety assessment. The safety assessment is conducted by an inspection agency with the qualification to inspect liquefied petroleum gas cylinders in accordance with the national standard GB8334 "Periodic Inspection and Evaluation of Liquefied Petroleum Gas Cylinders". The inspection agency shall be responsible for the assessment conclusion, and shall issue a safety assessment report and spray the words "Safety Assessment Qualified" with a height of 60 to 80mm on the bottle body. When the gas cylinder valve needs to be replaced, the inspection agency should select the gas cylinder valve manufactured by an enterprise with a gas cylinder valve manufacturing license, and indicate the name of the manufacturing unit and the manufacturing license number of the gas cylinder valve on the inspection report or safety assessment report.

Liquefied petroleum gas cylinders manufactured before the implementation of the GB5842-2006 "Liquefied Petroleum Gas Cylinders" standard should be scrapped if their service life reaches 15 years according to the date of manufacture marked on the steel seal, and reliable measures should be taken to eliminate their functional use.

（10） Regarding the function of eliminating the use of scrapped gas cylinders.

The geological supervision department should determine the inspection agency or professional unit responsible for eliminating the functional use of scrapped gas cylinders and conduct supervision and inspection on them. When the geological supervision department has not yet determined the unit, the institution implementing regular inspections of gas cylinders shall carry out functional elimination treatment in accordance with Article 7.2 of the "Cylinder Regulations". The property rights unit of the gas cylinder shall fulfill the obligation of scrapping the gas cylinder in accordance with the law, and entrust the scrapped gas cylinder to the unit determined by the local geological supervision department for functional elimination.

（11） Regarding the filling records of gas cylinders for vehicles.

The vehicle gas cylinder filling unit has adopted information technology to control and record the filling of gas cylinders, and the information system can automatically record and save the relevant content of filling records as stipulated in Article 31 of the "Regulations on Safety Technical Supervision of Vehicle Gas Cylinders" (TSG R0009-2009). The filling unit may no longer manually record and paste filling labels.

（12） Regarding batch inspection product quality certificates and supervision inspection certificates.

Encourage gas cylinder manufacturing enterprises to publicly display the batch quality certificate and inspection certificate of gas cylinders online (corresponding to the steel seal of the gas cylinder number or the identification barcode installed on the gas cylinder), and print identification QR codes on the product packaging and qualification certificate, providing users with the function of using mobile phones to check the authenticity online. With the consent of the gas cylinder user (buyer), the gas cylinder manufacturing enterprise implementing the above measures may no longer provide paper batch inspection product quality certificates and supervision inspection certificates to the user.

Attachment: 1 Category level of manufacturing license for pressure pipeline components

2. Type and level of gas cylinder manufacturing license

3. Sub item of Manufacturing Varieties for Gas Cylinder Valves