Product Introduction
Modern pipeline steel is a low-carbon or ultra-low-carbon microalloyed steel, which is a product with high technical content and high added value. Most of the new technology achievements in the metallurgical field in the past 20 years have been applied to the production of pipeline steel. The development trend of pipeline engineering is large pipe diameter, high-pressure rich gas transportation, high cooling, high corrosion use environment, and subsea pipeline wall thickness. Therefore, modern pipeline steel should have high strength, low Bauschinger effect, high toughness and brittleness resistance, low weld carbon content and good weldability, and resistance to HIC and H2S corrosion. The pipeline steel plate is used to manufacture welded line pipes, because seamless line pipes are made of round bar, not steel plates. Medium thick plate is generally used to produce thick wall straight seam welded pipe, and the coil steel is used to produce electric resistane welded(ERW) pipe and spirally submerged arc welded(SSAW) pipe. Nowadays, more and more clients require pipeline steel plate to produce line pipes because the steel plates can be used to manufacture bigger diameter pipes, in addition, the price of welded pipes is usually lower than that of seamless pipes. Line pipe steel plate is key material for production of ERW line pipe, LSAW line pipe, SSAW line pipe, which are used in pipe line construction in oil, gas and water transport, it can be used in manufacturing pressure fluid transmission construction. Extremely low arctic temperatures, extreme pressures in the deep ocean, acid media: even the most fierce conditions have no negative effect on our linepipe plates. Linepipe plates are able to work in depths of up to 2,800 meters below the sea surface. We also offer roll-bonded clad offshore structural steel plate with a corrosion-resistant cladding for the highest demands in sour-gas application. As a specialist in modern thermo mechanical rolling technology with accelerated cooling, we are among the world's industry leaders.
Product Display
Product Parameters
| API 5L Grade | Yield Strength | Tensile Strength | Yield to Tensile Ratio | Elongation |
| min. | min. | (max.) | min. | |
| (ksi) | (ksi) |
| % | |
| A | 30 | 48 | 0.93 | 28 |
| B | 35 | 60 | 0.93 | 23 |
| X42 | 42 | 60 | 0.93 | 23 |
| X46 | 46 | 63 | 0.93 | 22 |
| X52 | 52 | 66 | 0.93 | 21 |
| X56 | 56 | 71 | 0.93 | 19 |
| X60 | 60 | 75 | 0.93 | 19 |
| X65 | 65 | 77 | 0.93 | 18 |
| X70 | 70 | 82 | 0.93 | 17 |
| X80 | 80 | 90 | 0.93 | 16 |
Equivalent Grades
| Standard | Grade | |||||||||
| API 5L | A25 | Gr A | GrB | X42 | X46 | X52 | X56 | X60 | X65 | X70 |
| GB/T 9711 ISO 3183 | L175 | L210 | L245 | L290 | L320 | L360 | L390 | L415 | L450 | L485 |
Delivery Condition
| PSL | DELIVERY CONDITION | PIPE GRADE/ STEEL GRADE (a), (b) |
| PSL1 | As-rolled, normalizing rolled, normalized or normalizing formed | L175 or A25, L175P or A25P, L210 or A |
| PSL1 | As-rolled, normalizing rolled, thermomechanical rolled, thermomechanical formed, normalizing formed, normalized, normalized and tempered; or, if agreed, quenched and tempered for SMLS pipe only. | L245 or B |
| PS1 | As-rolled, normalizing rolled, thermomechanical rolled, thermomechanical formed, normalizing formed, normalized, normalized and tempered or quenched and tempered. | L290 or X42, L320 or X46, L360 or X52, L390 or X56, L415 or X60, L450 or X65, L485 or X70 |
| PSL1 | As-rolled | L245R or BR, L290R or X42R |
| PSL2 | Normalizing rolled, normalizing formed, normalized or normalized and tempered | L245N or BN, L290N or X42N, L320N or X46N, L360N or X52N, L390N or X56N, L415N or X60N |
| PSL2 | Quenched and tempered | L245Q or BQ, L290Q or X42Q, L320Q or X46Q, L360Q or X52Q, L390Q or X56Q, L415Q or X60Q, L450Q or X65Q, L485Q or X70Q,L555Q or X80Q, L625Q or X90Q (c) , L690Q or X100Q (c) |
| PSL2 | Thermomechanical rolled or thermomechanical formed | L245M or BM, L290M or X42M, L320M or X46M, L360M or X52M, L390M or X56M, L415M or X60M, L450M or X65M, L485M or X70M,L555M or X80M |
| PSL2 | Thermomechanical rolled | L625M or X90M, L690M or X100M, L830M or X120M |