Hot-rolled seamless steel pipe advantages:
Ingot casting can destroy tissue, grain refinement of steel and eliminate defects microstructure, so that the steel dense tissue mechanical properties are improved. This improvement is mainly reflected in the direction along the rolling direction to a certain extent, the steel is no longer isotropic; pouring formed bubbles, cracks and loose, can be welded at a high temperature and pressure.
Hot-rolled seamless steel tube process:
Round tube perforation → heating → three-roll rolling, rolling or extrusion → detached → sizing (or reducing) → cooling → straightening → hydrostatic test (or testing) → mark → storage
| Standard | ASTM, DIN, API, GB,ANSI,EN; ASTM A53, ASTM A106, DIN 17175, API 5L, GB/T9711 |
| Grade Group | BR/BN/BQ,X42R,X42N,X42Q,X46N,X46Q,X52N,X52Q,X56N,X56Q,X56,X60,X65,X70 |
| Out diameter | 1/4"-36" |
| Wall thickness | 1.25mm-50mm |
| Length | 3m-12m |
| Process | Cold drawn tube;Hot rolled tube |
| Section Shape | Round |
| Technique | Hot Rolled |
| Certification | API |
| Special Pipe | API Pipe |
| Alloy Or Not | Non-alloy |
| Application | Water, Gas, Oil transportation seamless steel line pipe |
| Surface Treatment | Black painting or 3pe,3pp,fbe anti-corrosion coated |
| Type | Hydraulic pipe；Boiler Tube；Fluid Pipe；Fire Pipe；Line Pipe；Structure Tube；Mechanical tube |
| OEM | accept |
| Visit factory | welcomed |
| Usage | underground water,gas,oil supply steel line pipe |
|
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 | |