API 5L ASTM A106 A53 Grb Sch Xxs Sch40 Sch80 Sch 160 Seamless Carbon Steel PipeProduct Description Seamless steel pipes are perforated from whole round steel, and steel pipes without welds on the surface are called seamless steel pipes. According to the production method, seamless steel pipes can be divided into hot-rolled seamless steel pipes, cold-rolled seamless steel pipes, cold-drawn seamless steel pipes, extruded seamless steel pipes, and top pipes. According to the cross-sectional shape, seamless steel pipes are divided into two types: round and special-shaped. Special-shaped pipes include square, oval, triangular, hexagonal, melon seed, star, and finned pipes. The maximum diameter is 900mm and the minimum diameter is 4mm. According to different purposes, there are thick-walled seamless steel pipes and thin-walled seamless steel pipes. Seamless steel pipes are mainly used as petroleum geological drilling pipes, cracking pipes for petrochemical industry, boiler pipes, bearing pipes, and high-precision structural steel pipes for automobiles, tractors, and aviation.
Seamless steel pipes are widely used. 1. General-purpose seamless steel pipes are rolled by ordinary carbon structural steel, low-alloy structural steel or alloy structural steel, with the largest output, and are mainly used as pipelines or structural parts for conveying fluids.
2. According to different purposes, it can be supplied in three categories:
a. Supply according to chemical composition and mechanical properties;
b. According to mechanical performance;
c. According to the water pressure test supply. Steel pipes supplied according to categories a and b. if used to withstand liquid pressure, shall also be subjected to a hydraulic test.
3. Special-purpose seamless pipes include seamless pipes for boilers, chemical and electric power, seamless steel pipes for geology, and seamless pipes for petroleum.
Seamless steel pipes have a hollow section and are used in large quantities as pipelines for transporting fluids, such as pipelines for transporting oil, natural gas, gas, water and certain solid materials. Compared with solid steel such as round steel, steel pipe is lighter in flexural and torsional strength and is an economical section steel. Widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipes, automobile transmission shafts, bicycle frames, and steel scaffolding used in construction. Steel pipes are used to make ring parts, which can improve material utilization, simplify manufacturing procedures, and save materials and processing. Working hours.
Standard of carbon seamless steel pipe
| ASTM A53 Gr.B |
Black and hot-dipped zinc-coated steel pipes welded and seamless |
| ASTM A106 Gr.B |
Seamless carbon steel for high temperature service |
| ASTM SA179 |
Seamless cold-drawn low-carbon steel heat exchanger and condenser tubes |
| ASTM SA192 |
Seamless carbon steel boiler tubes for high pressure |
| ASTM SA210 |
Seamless Medium-carbon boiler and superheater tubes |
| ASTM A213 |
Seamless alloy-steel boiler, superheater, and heat-exchanger tubes |
| ASTM A333 GR.6 |
seamless and welded carbon and alloy steel pipe intended for use at low temperatures. |
| ASTM A335 P9,P11,T22,T91 |
Seamless ferritic alloy-steel pipe for high-temperature service |
| ASTM A336 |
Alloy steel forgings for pressure and high-temperature parts |
| ASTM SA519 4140/4130 |
Seamless carbon for mechanical tubing |
| API Spec 5CT J55/K55/N80/L80/P110/K55 |
Seamless steel pipe for casing |
| API Spec 5L PSL1/PSL2 Gr.b, X42/46/52/56/65/70 |
Seamless steel pipe for line pipe |
| DIN 17175 |
Seamless steel tube for elevated temperture |
| DN2391 |
Cold drawn seamless prevision pipe |
| DIN 1629 |
Seamless circular unalloyed steel tubes subject to special requirements |
Chemical components & mechanical properties
| Standard |
Grade |
Chemical Components (%) |
Mechanical Properties |
| ASTM A53 |
C |
Si |
Mn |
P |
S |
Tensile STrength(Mpa) |
Yield STrength(Mpa) |
| A |
≤0.25 |
- |
≤0.95 |
≤0.05 |
≤0.06 |
≥330 |
≥205 |
| B |
≤0.30 |
- |
≤1.2 |
≤0.05 |
≤0.06 |
≥415 |
≥240 |
| ASTM A106 |
A |
≤0.30 |
≥0.10 |
0.29-1.06 |
≤0.035 |
≤0.035 |
≥415 |
≥240 |
| B |
≤0.35 |
≥0.10 |
0.29-1.06 |
≤0.035 |
≤0.035 |
≥485 |
≥275 |
| ASTM SA179 |
A179 |
0.06-0.18 |
- |
0.27-0.63 |
≤0.035 |
≤0.035 |
≥325 |
≥180 |
| ASTM SA192 |
A192 |
0.06-0.18 |
≤0.25 |
0.27-0.63 |
≤0.035 |
≤0.035 |
≥325 |
≥180 |
| API 5L PSL1 |
A |
0.22 |
- |
0.90 |
0.030 |
0.030 |
≥331 |
≥207 |
| B |
0.28 |
- |
1.20 |
0.030 |
0.030 |
≥414 |
≥241 |
| X42 |
0.28 |
- |
1.30 |
0.030 |
0.030 |
≥414 |
≥290 |
| X46 |
0.28 |
- |
1.40 |
0.030 |
0.030 |
≥434 |
≥317 |
| X52 |
0.28 |
- |
1.40 |
0.030 |
0.030 |
≥455 |
≥359 |
| X56 |
0.28 |
- |
1.40 |
0.030 |
0.030 |
≥490 |
≥386 |
| X60 |
0.28 |
- |
1.40 |
0.030 |
0.030 |
≥517 |
≥448 |
| X65 |
0.28 |
- |
1.40 |
0.030 |
0.030 |
≥531 |
≥448 |
| X70 |
0.28 |
- |
1.40 |
0.030 |
0.030 |
≥565 |
≥483 |
| API 5L PSL2 |
B |
0.24 |
- |
1.20 |
0.025 |
0.015 |
≥414 |
≥241 |
| X42 |
0.24 |
- |
1.30 |
0.025 |
0.015 |
≥414 |
≥290 |
| X46 |
0.24 |
- |
1.40 |
0.025 |
0.015 |
≥434 |
≥317 |
| X52 |
0.24 |
- |
1.40 |
0.025 |
0.015 |
≥455 |
≥359 |
| X56 |
0.24 |
- |
1.40 |
0.025 |
0.015 |
≥490 |
≥386 |
| X60 |
0.24 |
- |
1.40 |
0.025 |
0.015 |
≥517 |
≥414 |
| X65 |
0.24 |
- |
1.40 |
0.025 |
0.015 |
≥531 |
≥448 |
| X70 |
0.24 |
- |
1.40 |
0.025 |
0.015 |
≥565 |
≥483 |
| X80 |
0.24 |
- |
1.40 |
0.025 |
0.015 |
≥621 |
≥552 |
ApplicationLow and middle pressure fluid pipeline, boiler, petroleum and natural gas industry, drilling, chemical industry, electric industry, shipbuilding, fertilizer equipment and pipeline, structure, petrochemical, pharmaceutical industrySurfaceBlack painting, varnish paint, anti rust oil, hot galvanized, cold galvanized, 3PE, etc.PackagePlastic film, wooden cases, wooden pallet, or on customers' requestCertificateISO9001: 2008, SGS, BV, etcCapacity50000tons/yearAdvantages1. Reasonable price with excellent quality2. Abundant stock and prompt delivery3. Rich supply and export experience, sincere service4. Reliable forwarder, 2-hour away from port.We special in manufacturing the steel pipe and steel pipe fittings30+years of pipe and fittings production experience at your services