Q355 Carbon Steel Seamless Pipe

Q355 Carbon Steel Seamless Pipe

Product Name : Carbon Steel Pipe
Material: A53 Gr.B,A36,ST52,ST35,ST42,ST45,X42,X46,X52,X60,X65X70
Standard: API 5L,ASTM A106 Gr.B,ASTM A53 Gr.B,ASTM A179/A192,ASTM A513,ASTM A671,ASTM A672,BS EN 10217,BS EN10296,BS EN 39,BS6323,DIN, EN10217
Certificates :API 5L,ISO9001,SGS,BV,CCIC
Outer Diameter :15mm-1200mm
Length :1m,4m,6m,8m,12m according to buyer's request
Surface Treatment :black paint,varnish,oil,galvanized,anti-corrosion coated
Marking: Standard marking,or according to your request.Marking Method:Spray white paint
End Treatment: Plain End/Bevelled End/Grooved End/Threaded End With Plastic Caps

// Product  Description //

ace of Origin:China
Oiled or Non-oiled:Non-oiled
Alloy Or Not:Non-Alloy
Tolerance:±1%
Special Pipe:Thick Wall Pipe,EMT Pipe
Outer Diameter:13 - 600 mm
outer meter10*10-600*600mm
wall thickness0.4-25mm
Length:1-12m
Shape:Round, Square or Rectangular
Itmes:4 6 12 inch SCH 40 80 black carbon steel pipe
processing serviceBending, Welding, Decoiling, Punching, Cutting
Secondary Or Not:Non-secondary
technologyhot rolled, cold rolled, black annealed
Keyword:welded steel pipe
End protector:Plastic Pipe Cap
Thickness:0.35 - 100mm
Standard:API, ASTM, bs, GB, API 5L, ASTM A106-2006,ASTM A53-2007, BS 1387, BS 1139, BS EN10219, GB 3087-1999, GB/T3901,EN, BS, JIS
Technique:ERW /LSAW/SSAW
Surface Treatment:Paint oil; Varnish; Galvanized;Galvanize the raw strip steel;
Certificate:Bsi, RoHS, SNI, BIS, SASO, SONCAP, sirm, ISO9001,API,ISO
Grade:

10#, 20#, 45#, Q235, Q345, Q195, Q215, ST52, ST42, ST35, 10#-45#, Q195-Q345, 

 ST35-ST52Q235, Q235B, S275, S275jr, A53, st37,  st52Q195 → Grade B,  

SS330,SPHC, S185Q215 → Grade C,CS Type B,SS330, SPHCQ235 → Grade D,SS400,S235JR,S235JO,S235J2Q345 → SS500,ST52

Usage:

mechanical manufacture, construction field, metallurgy industry, farm vehicles, 

 agriculture greenhouse, automotive industry, railway, highway guardrail, container frame, 

 furniture, decoration, steel structure,Chemical Fertilizer Pipe,Structure Pipe, Building Construction

packageStandard Seaworthy Packingtied with steel trips,then wrapped by plastic material or as request
Payment Term:L/C T/T (30%DEPOSIT)


Carbon steel pipe.jpg


Chemical Composition

A53gradeCMnPSCuNiCrMoV
Type S (Seamless)A0.250.950.050.050.40.40.40.150.08
B0.31.20.050.050.40.40.40.150.08
Type E (resistance welding)A0.250.950.050.050.40.40.40.150.08
B0.31.20.050.050.40.40.40.150.08
Type F (furnace weld)A0.31.20.050.050.40.40.40.150.08


Mechanical Behavior

A53grade Agrade B
tensile strength min.psi(MPa)48,000(330)60,000(415)
yield strength min.psi(MPa)30,000(205)35,000(240)


Physical Property

Density 20°CKg/dm³The elastic modulus of kN/mm²Thermal conductivity of 20°CW/m KHeat capacity of 20°CJ/kg KResistivity of 20°CΩmm²/m
20C°300C°400C°450C°
7.85210192184179514610.20


Applied Range

Construction: underground pipeline, groundwater, hot water transportation, machining, bearing sleeve, processing machinery parts, etc

Electrical: natural gas transmission, hydroelectric fluid pipeline, anti-static pipe for wind farm, etc.


Trusted Global Clients

Our products and services cover multiple countries and regions.

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Hongke

WHY

CHOOSE US

Wuxi Hongke Special Steel Co., Ltd. is a one-stop specialty steel supplier integrating R&D, production, deep processing, and international trade, delivering fully certified, standard-compliant solutions for global infrastructure and industrial projects.

Production Capacity

Full-process in-house production including hot rolling, cold rolling, galvanizing, pipe making, and section steel forming, supported by comprehensive physical & chemical testing instruments.

Customization Capabilities

Wide product range covering coils, sheets, bars, pipes, sections, and profiles, with customization available according to GB, ASTM, EN, JIS, AS, and GOST standards.

Authoritative Certification

Certified with ISO9001, ISO14001, CE, API 5L/5CT, ASTM and EN, ensuring stable and internationally compliant product quality.

Application Areas

Products are widely used in construction, machinery manufacturing, steel structures, energy transmission, auto parts, hardware, shipbuilding, and infrastructure projects.

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