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Creating a collection of high-quality varieties to enhance the core competitiveness of enterprises
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Product Introduction
Stainless steel
Precision alloy
Die steel
Automobile steel
Structural steel
Bearing steel
Spring steel
Carbon and alloy structural steels produced by DBSS are among the seven brand products in our company. Due to the most comprehensive steel grades, sizes and applications, the steels are widely used in various sectors such as petrochemicals, engineering machinery, wind power, naval architecture and marine engineering, automobile, mining, and precision parts for machine tools. Especially, the annual sales volume of our flagship steel products has exceeded 200,000 tons, which has made significant contributions to the development of national key industries.
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| Application | Steel types | Dimension | Steel grades | |
|---|---|---|---|---|
| Steel for petroleum and petrochemical | Steel for sucker rod | Rolled bars | ∅13-∅65mm | 20CrMoA(4120), 25CrMoA(4125), 30CrMoA(4130), 42CrMoA(4142), 25MnVA(1526), 25NiMnCrMoA(3130), 40CrMnMoV(4138M), 30Ni2CrMnMoVA(AISI4330), 20NiCrMnCuMoVA(AISI4720) |
| Petroleum drilling collar and tool | Rolled and forged bars | ∅65-∅300mm | 40CrMnMo, 40CrNiMoA, AISI4137, AISI4145H, 4145HMOD, D410 | |
| Steel for engineering machinery |
Breaker hammer | Rolled and forged bars | ∅13-∅500mm | 20CrMoH, 20CrNiMoA, 20CrMnMoH, 15CrMoH(SCM415H), 25CrMnNiMoH, 20Cr2Ni4A, SNCM26V, 40CrNiMoA, 42CrMoA, 40CrMnMo |
| (shell, piston, bolt, drilling rod ) | ||||
| Hydraulic system | Rolled and bright bars | ∅13-∅500mm | S43CR+QT, S45C+QT, 31CrMoV9, SAE1144 | |
| Chassis system | Rolled bars | ∅13-∅360mm | 15B36Cr, 25MnB, 25CrMnB, SCr440B, 40Mn2 | |
| (track, idle wheel, supporting wheel) | ||||
| Precision ball screw and guide rail | Leading screw | Rolled and bright bars | ∅13-∅150mm | 50CrMo4(AISI4150HV), S55C |
| Nut, sliding block | Rolled bars | ∅13-∅360mm | 20CrMo(SCM420H) | |
| Steel for mooring chain | ∅65-∅360mm | R3, R3S, R4 | ||
| Quenching and tempering steel | Rolled and forged bars | ∅13-∅500mm | 25CrMo(S)4+QT, 42CrMo(S)4+QT, 34CrNiMo6+QT, 30CrNiMo8+QT, 31CrMoV9+QT, 39NiCrMo3+QT, SAE4340QT | |
| Steel for wind power | ∅13-∅500mm | 42CrMoA, 42CrMo4, 30CrNiMo8, 18CrNiMo7-6, S355NL, Q355NE | ||
| Steel for tube billet | ∅13-∅500mm | 15CrMoG, 12Cr1MoVG, 12Cr2MoG(P22)SA106B/C, SA355P11, SA355P12, S355J2H, 4130, 4140, 15NiCuMoNb5-6-4(WB36) | ||
| Steel for mineral grinding balls | Rolled bars | ∅65-∅360mm | B200A-C, B300A-C, B350A-C, B400A-C, S500A, S500B, S550T, S650A, S650C | |
| LT-B2, LT-B3, LT-B6, MG300, 75105A | ||||
