GB/T 8162 Seamless Steel Pipes

Seamless steel pipes for structural use, as defined by Chinese national standards, are used in general and mechanical structures, do not bear internal pressure, and do not require hydrostatic testing.

Classification :

Carbon Steel Pipe

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PRODUCT DETAILS

Product parameters

Product name	Implementation standards	Outer diameter range	Wall thickness range	length range
ASTM A53 Seamless & Welded Carbon Steel Pipe	ASTM A53/A53M, ASME SA53	13.7mm ~ 914mm (1/4" ~ 36")	SCH10/20/40/80/160/XXS, regular 1.0~20mm	Fixed length 6m, 12m, can also be customized as required
ASTM A106 Seamless Pressure Pipe	ASTM A106/A106M, ASME SA106	10.3mm ~ 914mm (3/8" ~ 36")	SCH20/40/80/160/XXS, regular 2.0~60mm	Fixed length 6m, 12m, variable length 4~12m
ASTM A179 Seamless Cold Drawn Mild Steel Pipe	ASTM A179/A179M, ASME SA179	6mm ~ 273mm (1/4" ~ 10")	1.24mm ~ 15mm, commonly used 2 ~ 8mm	The longest length is 12000mm, and the length can be customized on demand.
ASTM A192 Seamless Carbon Steel Pipe	ASTM A192/A192M, ASME SA192	10mm ~ 168mm (3/8" ~ 6")	2mm ~ 20mm, commonly used 3 ~ 12mm	Fixed length 6m, 9m, 12m
ASTM A213 Seamless Carbon Steel Pipe	ASTM A213/A213M, ASME SA213	6mm ~ 273mm (1/4" ~ 10")	1.5mm ~ 40mm	Fixed length 6m, 12m, can be customized
ASTM A252 Seamless & Welded Pipe Piles	ASTM A252/A252M	152mm ~ 3048mm (6" ~ 120"), regular 219~2000mm	SCH STD/40/XS/80/XXS/160, regular 5~40mm	6m, 12m, length can be customized according to the project
ASTM A333 Seamless & Welded Steel Pipe	ASTM A333/A333M, ASME SA333	13.7mm ~ 914mm (1/2" ~ 36")	SCH20/40/80/160, regular 2~50mm	Fixed length 6m, 12m
ASTM A335 Seamless Steel Pipe	ASTM A335/A335M, ASME SA335	13.7mm ~ 914mm (1/2" ~ 36")	SCH20/40/80/160/XXS, regular 3~80mm	Fixed length 6m, 12m
GB/T 8162 Seamless steel pipe	GB/T 8162-2018	10mm~760mm	2mm~160mm	Hot rolled 3~12m, cold rolled 1.5~9m, fixed length on demand
DIN 17175 Seamless Steel Pipe	DIN 17175	10mm ~ 610mm	2mm~60mm	Fixed length 6m, 12m
DIN 1629 seamless steel pipe	DIN 1629	21.3mm~711mm	2mm~50mm	Fixed length 6m, 12m
EN 10210/S355 Seamless Steel Pipe	EN 10210-1:2006	219mm ~ 1422mm (8" ~ 56")	9.53mm ~ 140mm	6m ~ 11.8m
EN 10219/S235 Welded steel pipes	EN 10219-1:2006	21.3mm ~ 1422mm	2.0mm ~ 40mm	3m ~ 18m
Spiral submerged arc welded pipe SSAW	API Spec 5L, GB/T 9711, SY/T 5037, ASTM A252	219mm ~ 3620mm (8" ~ 142")	5mm ~ 25mm, thick wall up to 40mm	8m ~ 18.3m
Straight seam submerged arc welded pipe LSAW	API Spec 5L, GB/T 9711, ASTM A671/A672	406mm ~ 3620mm (16" ~ 144")	6mm ~ 50mm, thick wall up to 80mm	6m ~ 12.5m
Resistance welded pipe ERW	API Spec 5L, GB/T 3091, GB/T 9711, ASTM A53	13.7mm ~ 610mm (1/2" ~ 24")	2mm ~ 12.7mm	6m, 12m fixed length, can be customized
galvanized steel pipe	GB/T 3091-2025, GB/T 13793, ASTM A53, BS 1387	DN15~DN200 (21.3mm~219.1mm), large diameter can be customized	2.0mm ~ 6.0mm, divided into ordinary wall thickness and thickened	Mainly fixed length of 6 meters
API Spec 5L Pipeline Steel Pipe	API Spec 5L (46th edition), ISO 3183, GB/T 9711	10.3mm ~ 2200mm (3/8" ~ 86")	2.0mm ~ 50mm+, depending on steel grade and pipe diameter	Seamless 6~12m; welded pipe 8~18.3m
API 5CT oil casing/tubing	API Spec 5CT (10th edition), ISO 11960, SY/T 6194	Bushing: 114.3mm ~ 508mm (4 1/2" ~ 20") Oil pipe: 26.7mm ~ 114.3mm (1.05" ~ 4 1/2")	4.24mm ~ 16.13mm, depending on steel grade and specification	5.5m ~ 22.23m, commonly used R1 (6.1~7.62m), R2 (8.53~10.36m), R3 (11.58~13.72m)

Material Standards

Product name	Surface technology	chemical composition	Mechanical properties	Application scope
ASTM A53 Seamless & Welded Carbon Steel Pipe	Black pipe (bare pipe), hot-dip galvanizing, black paint, anti-rust oil	Grade A: C≤0.25%, Mn≤0.95%, P≤0.05%, S≤0.06% Grade B: C≤0.30%, Mn 0.29~1.06%, P≤0.05%, S≤0.06%	Grade A: Tensile strength ≥330MPa, yield ≥205MPa Grade B: Tensile strength ≥415MPa, yield ≥240MPa Elongation ≥25%	Transportation of low-pressure fluids such as water, gas, air, steam, etc.; building structures, scaffolding, mechanical processing, fire piping
ASTM A106 Seamless Pressure Pipe	Black leather (pickling), anti-rust oil, spray paint, 3PE/FBE anti-corrosion	Grade A: C≤0.25%, Mn 0.27~0.93%, P≤0.035%, S≤0.035% Grade B: C≤0.30%, Mn 0.29~1.06%, Si≥0.1%, P≤0.035%, S≤0.035% Grade C: C 0.35~0.50%, Mn 0.29~1.06%	Grade A: Tensile strength ≥330MPa, yield ≥205MPa Grade B: Tensile strength ≥415MPa, yield ≥240MPa Grade C: Tensile strength ≥485MPa, yield ≥275MPa Elongation ≥22%	High temperature and high pressure steam pipelines, petroleum refining, power plant boiler main pipelines, chemical heat exchange systems, oil and gas gathering and transportation trunk lines
ASTM A179 Seamless Cold Drawn Mild Steel Pipe	Pickling, bright annealing, anti-rust oil	C 0.06~0.18%, Mn 0.27~0.63%, P≤0.035%, S≤0.035%, Si≤0.25%	Tensile strength ≥325MPa, yield strength ≥180MPa Elongation ≥ 35%, hardness ≤ 72HRB	Heat exchangers, condensers, evaporators, cooler tube bundles; refrigeration equipment, HVAC, petrochemical heat exchange systems
ASTM A192 Seamless Carbon Steel Pipe	Pickling, phosphating, anti-rust oil, blackening	C 0.06~0.18%, Mn 0.27~0.63%, P≤0.035%, S≤0.035%, Si≤0.25%	Tensile strength ≥325MPa, yield strength ≥180MPa Elongation ≥35%, hardness ≤77HRB	Power station boiler water wall, superheater, reheater pipes; high-pressure steam pipes, petrochemical heating furnace pipes
ASTM A213 Seamless Carbon Steel Pipe	Pickling, solution treatment, bright annealing, anti-rust oil	T11: C≤0.15%, Mn 0.3~0.6%, Cr 1.0~1.5%, Mo 0.45~0.65% T22: C≤0.15%, Cr 1.9~2.6%, Mo 0.87~1.13% T91: C 0.08~0.12%, Cr 8.0~9.5%, Mo 0.85~1.05%	T11: Tensile strength ≥415MPa, yield ≥205MPa T22: Tensile strength ≥415MPa, yield ≥205MPa T91: Tensile strength ≥620MPa, yield ≥440MPa	Power station boiler superheater and reheater; petroleum refining and hydrogenation equipment, high temperature reactor tubes; nuclear power conventional island heat exchange tubes
ASTM A252 Seamless & Welded Pipe Piles	Black pipe, FBE anti-corrosion, 3PE anti-corrosion, hot-dip galvanizing, cement mortar lining	Grade 1: P≤0.06% (phosphorus control only) Grade 2: P≤0.06% Grade 3: P≤0.05% (Chemical composition requirements are loose, focusing on mechanical properties)	Grade 1: Tensile strength ≥310MPa, yield ≥207MPa Grade 2: Tensile strength ≥415MPa, yield ≥241MPa Grade 3: Tensile strength ≥455MPa, yield ≥310MPa	Building pile foundations, bridge pile foundations, dock projects, offshore platform foundations, foundation pit support, wind power foundation piles
ASTM A333 Seamless & Welded Steel Pipe	Pickling, anti-rust oil, spray painting, low temperature anti-corrosion coating	Gr.6: C≤0.30%, Mn 0.29~1.06%, P≤0.035%, S≤0.035%, Si≥0.1% Gr.3: C≤0.19%, Mn 0.31~0.64%, Ni 3.18~3.82%	Gr.6: Tensile strength ≥415MPa, yield ≥240MPa, -45℃ impact ≥18J Gr.3: Tensile strength ≥450MPa, yield ≥240MPa, -101℃ impact ≥18J	LNG, ethylene plants, air separation equipment, refrigeration systems, cryogenic storage tanks, polar oil and gas pipelines
ASTM A335 Seamless Steel Pipe	Pickling, annealing, anti-rust oil, high temperature paint	P11: C≤0.15%, Cr 1.0~1.5%, Mo 0.45~0.65% P22: C≤0.15%, Cr 1.9~2.6%, Mo 0.87~1.13% P91: C 0.08~0.12%, Cr 8.0~9.5%, Mo 0.85~1.05%, V 0.18~0.25%	P11: Tensile strength ≥415MPa, yield ≥205MPa P22: Tensile strength ≥415MPa, yield ≥205MPa P91: Tensile strength ≥585MPa, yield ≥415MPa	Main steam pipes and high-temperature reheat steam pipes of power stations; petroleum refining catalytic cracking and hydrogenation units; high-temperature process pipes of chemical plants
GB/T 8162 Seamless steel pipe	Hot-rolled black leather, cold-drawn bright, pickling, anti-rust oil	20#: C 0.17~0.24%, Mn 0.35~0.65%, P≤0.035%, S≤0.035% 45#: C 0.42~0.50%, Mn 0.50~0.80% Q355B: C≤0.24%, Mn≤1.60%, P≤0.035%, S≤0.035%	20#: Tensile strength ≥390MPa, yield ≥245MPa, elongation ≥24% 45#: Tensile strength ≥600MPa, yield ≥355MPa, elongation ≥16% Q355B: Tensile strength ≥470~630MPa, yield ≥355MPa	Mechanical processing, auto parts, bearing sleeves, cylinder barrels; construction steel structures, bridge components, hoisting machinery, brackets
DIN 17175 Seamless Steel Pipe	Pickling, annealing, anti-rust oil	St35.8: C≤0.17%, Mn 0.40~0.80%, P≤0.040%, S≤0.040% St45.8: C≤0.21%, Mn 0.40~1.00% 13CrMo44: C≤0.15%, Cr 0.70~1.10%, Mo 0.45~0.65%	St35.8: Tensile strength 360~480MPa, yield ≥235MPa, elongation ≥25% St45.8: Tensile strength 410~530MPa, yield ≥255MPa, elongation ≥22% 13CrMo44: Tensile strength 450~600MPa, yield ≥290MPa	Power station boiler heating surface tubes, headers, steam pipes; chemical plant high temperature reaction pipes, refinery heating furnace tubes
DIN 1629 seamless steel pipe	Black pipe, anti-rust oil, spray paint, hot dip galvanizing	St37.0: C≤0.17%, Mn 0.40~0.80%, P≤0.050%, S≤0.050% St44.0: C≤0.21%, Mn 0.40~1.20% St52.0: C≤0.20%, Mn 1.00~1.60%	St37.0: Tensile strength 340~480MPa, yield ≥235MPa, elongation ≥25% St44.0: Tensile strength 420~550MPa, yield ≥275MPa, elongation ≥23% St52.0: Tensile strength 490~630MPa, yield ≥355MPa, elongation ≥22%	Chemical containers, storage tanks, piping systems; general mechanical engineering, steel structures, equipment manufacturing, water treatment piping
EN 10210/S355 Seamless Steel Pipe	Black pipe, black paint, lightly oiled, hot-dip galvanized, 3PE anti-corrosion	S355JRH: C≤0.22%, Mn≤1.60%, P≤0.035%, S≤0.035% S355J2H: C≤0.22%, Mn≤1.60%, P≤0.030%, S≤0.025%	S355JRH: Tensile strength 470~630MPa, yield ≥355MPa, impact at 0℃ ≥27J S355J2H: Tensile strength 470~630MPa, yield ≥355MPa, -20℃ impact ≥27J	Construction steel structures, bridges, hoisting machinery, marine engineering, wind power towers, heavy equipment supports, pile foundations
EN 10219/S235 Welded steel pipes	Black pipe, hot-dip galvanizing, spray painting, plastic spraying	S235JRH: C≤0.17%, Mn≤1.20%, P≤0.045%, S≤0.045% S235J0H: C≤0.17%, Mn≤1.20%, P≤0.035%, S≤0.035%	S235JRH: Tensile strength 360~510MPa, yield ≥235MPa, elongation ≥24% S235J0H: Tensile strength 340~470MPa, yield ≥225MPa, impact at 0℃ ≥27J	Building steel structures, factory frames, curtain wall keels, guardrails, scaffolding, mechanical equipment shells, shelves
Spiral submerged arc welded pipe SSAW	Black pipe, FBE single layer fused epoxy, 3PE/2PE anti-corrosion, cement mortar lining, epoxy coal pitch	Q235B/Q355B/L245/L290/L360/X42~X80, etc. C≤0.20%, Mn 0.6~1.6%, P≤0.030%, S≤0.030% (varies with steel grade)	Q235B: Tensile strength 375~500MPa, yield ≥235MPa L360/X52: Tensile strength 460~760MPa, yield ≥360MPa 0℃ impact ≥34J	Municipal water supply and drainage, sewage treatment, medium and low pressure gas, heat pipe network; bridge pile foundation, dock engineering, farmland irrigation, inverted siphon
Straight seam submerged arc welded pipe LSAW	Black pipe, 3PE/FBE anti-corrosion, inner epoxy coating, insulation layer (polyurethane + PE jacket)	L245~L555/B~X80 grade pipeline steel C≤0.16%, Mn 1.0~1.8%, Nb/V/Ti microalloying, P≤0.025%, S≤0.015%	L450/X65: Tensile strength 535~760MPa, yield ≥450MPa, -20℃ impact ≥68J L555/X80: tensile strength 625~825MPa, yield ≥555MPa	Long-distance oil and gas trunk lines, high-pressure gathering and transportation pipelines, urban high-pressure gas; pressure steel pipes for hydropower stations, cross-sea water diversion projects, offshore platform risers
Resistance welded pipe ERW	Black pipe, hot-dip galvanizing, plastic coating, 3PE anti-corrosion, spray painting	Q195/Q235B/Q355B/L245~L415 etc. C≤0.20%, Mn 0.3~1.2%, P≤0.035%, S≤0.035%	Q235B: Tensile strength 375~500MPa, yield ≥235MPa, elongation ≥20% L245: Tensile strength 415~760MPa, yield ≥245MPa	Building water supply and drainage, fire protection pipes, cable wiring, steel structures; low-pressure gas, heating pipes, scaffolding, guardrails, furniture pipes
galvanized steel pipe	Hot-dip galvanizing (zinc layer ≥ 275g/m²), electro-galvanizing, galvanizing + plastic coating composite	Base material Q195/Q215/Q235B low carbon steel C≤0.20%, Mn 0.3~0.8%, P≤0.045%, S≤0.050% Surface zinc layer purity ≥98.5%	Q235B base material: tensile strength ≥375MPa, yield ≥235MPa Zinc layer adhesion: no falling off or bulging in hammer test	Building fire sprinklers, domestic water supply, gas home, HVAC; cable protection tubes, street light poles, guardrails, greenhouse frames
API Spec 5L Pipeline Steel Pipe	Bare pipe, 3PE/2PE external anti-corrosion, FBE sintered epoxy, internal drag reduction coating, thermal insulation layer	Gr.B: C≤0.28%, Mn 0.6~1.2%, P≤0.030%, S≤0.030% X65: C≤0.16%, Mn≤1.7%, Nb+V+Ti≤0.15%, P≤0.025%, S≤0.015% X80: C≤0.10%, Mn≤2.0%, micro-alloyed design	Gr.B: Tensile strength 415~760MPa, yield ≥245MPa X52: Tensile strength 460~760MPa, yield ≥359MPa X65: Tensile strength 535~760MPa, yield ≥450MPa X80: Tensile strength 625~825MPa, yield ≥555MPa	Crude oil and natural gas long-distance pipelines; oil and gas field gathering and transportation pipeline networks, urban high-pressure gas pipeline networks; marine risers, submarine pipelines
API 5CT oil casing/tubing	Black leather, phosphating, surface anti-rust oil; internal coating can be added to the inner wall for anti-corrosion	J55/K55: C≤0.40%, Mn≤1.7%, P≤0.030%, S≤0.030% N80: C 0.25~0.50%, Mn 0.7~1.7% L80-13Cr: C≤0.15%, Cr 12.0~14.0% P110: C 0.25~0.40%, Mn 0.7~1.6%	J55: Tensile strength 517~724MPa, yield 379~552MPa N80: tensile strength 689~827MPa, yield 552~758MPa P110: Tensile strength 862~1034MPa, yield 758~965MPa L80: Tensile strength ≥655MPa, yield 552~655MPa	Oil and gas wellbore cementing casing, oil production pipe; water injection well, geothermal well; shale gas, coalbed methane and other unconventional oil and gas development pipes

Production

Warehousing

Application Areas

Customer Praise

All products comply with global mainstream standards: API 5L/5CT, ASTM A106/A53/A335, EN 10216, ISO 3183, JIS and GB standards. Complete MTC and third-party inspection certificates are available.

APPLICATION FIELD

Agricultural Machinery

Aerospace

Shipbuilding

Bridge

Oil pipeline

Chemical industry

Steel structure

Architecture

CUSTOMER VISIT

Customer Visit

FAQ

1.Are You Manufacture or Trade Company?

We are the professional manufacturer of steel products located in China. Welcome to contact us and visit our factory before you place orders.

2. How do you guarantee the quality?

We can send you free samples and also accept third-party testing. We also have test certificates. Every batch of goods is tested before shipment, and the test report will be sent to you by mail or online.

3. Can I get free samples?

Of course you can. We can produce according to your samples or technical drawings. Contact us by whatsapp or email to get free samples and you will get the sample after 3-7 working days.

4. What is the MOQ?

If you are scheduling to place a small quantity order or trial order, feel free to contact us, we can meet your requirements.

5.Can you OEM or ODM?

Yes, we have a strong developing team. The products can be made according to your request.

6.What about your price?

Our price is very competitive because we are a factory. Feel free to contact us if you are interested in our products.