Analysis of fault layer problem of A131 DH40 oil platform steel plate

We are world class steel A131 DH40 oil platform steel plate materials supplier. We are engaed in providing raw steel materials such as steel plates / steel coils / steel sheets / steel pipes, deep processing and a series project design and solutions to clients. We guarantee to return goods for free for A131 DH40 oil platform steel plate quality problem during its lifetime. Your satisfactory is our permanent pursue. We always welcome advise from clients to make self-improvement continously. And sincerely to build long-term cooperation with you.

Our marine steel CCS Grade A hot rolled plates, A131 DH40 oil platform steel plate specification available now has 6*3300*4000, 5*1500*4500, 12*2700*9600, 9*3200*10400, 11*1790*7990, 6*3380*4600, 5*1500*11700, 12*2700*9000, 12.5*3390*9260, 13*1750*8400, 7*3620*9700, 12*2500*8350, 14.5*1830*6300, 15*3000*4200, 20*2750*5000, 7*1760*4250, 12*3000*10500, 12*3660*6070, 13*2000*4700, 13*2810*4100, 17*1910*7860, 12*2700*11450, 12*3800*9740.

40Cr steel plate is one of the most widely used steel in machinery manufacturing. After tempering, it has good comprehensive mechanical properties, good low temperature impact toughness and low notch sensitivity. The hardenability of steel A131 DH40 oil platform steel plate is good. It can be hardened to Ф28 ～ 60mm during water quenching and Ф15～40mm during oil quenching. When the hardness is HB174～229, the relative cutting workability is 60%. The steel is suitable for making medium-sized plastic molds.

Plasma cutting has a wide range of applications. With different working gas, it can cut various kinds of metals that are difficulty to handle by oxygen cutting. Plasma cutting is fast and efficient when cutting metal with small thickness. The A131 DH40 oil platform steel plate cutting speed can reach more than 10m/min. Plasma cutting can get a clean, neat, non stick slag cutting surface, while the deformation and thermal effect of the incision are small, its hardness change is little, and the cutting quality is good.

"ASTM A516 Grade 70 plate is a boiler / pressure vessel quality of steel plate for use in low to moderate services. It has improved notch toughness. A131 DH40 oil platform steel plate, A516 Grade 70 steel plates can be produced with thick up to 200mm.For boiler steel plate A516 Grade 70, the yield strength shall be above 260 Mpa, tensile strength from 485 Mpa to 620 Mpa.A516 Garde70 steel plate is equivalent to the P355GH and 490B grades. "

The after-sale service of iron and steel products includes after-sale tracking service, technical guidance, transfer of relevant bills, handling of objections and many other contents. The handling of quality objections accounts for a large proportion. When dealing with these problems, we should distinguish the responsibilities, and compensate or return the inconvenience or loss caused to users due to steel.