Dongbei Special Steel Group Co., Ltd

Products And Services Product Introduction

Products And Services

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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.

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 )	Rolled and forged bars	∅13-∅500mm
	Hydraulic system	Rolled and bright bars	∅13-∅500mm	S43CR+QT, S45C+QT, 31CrMoV9, SAE1144
		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
	Leading screw	Rolled and bright bars	∅13-∅150mm	50CrMo4(AISI4150HV), S55C
	Nut, sliding block	Rolled bars	∅13-∅360mm	20CrMo(SCM420H)
			∅13-∅360mm	20CrMo(SCM420H)
Steel for mooring chain			∅65-∅360mm	R3, R3S, R4
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
Quenching and tempering steel			∅13-∅500mm
Steel for wind power			∅13-∅500mm	42CrMoA, 42CrMo4, 30CrNiMo8, 18CrNiMo7-6, S355NL, Q355NE
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 tube billet			∅13-∅500mm
Steel for mineral grinding balls		Rolled bars	∅65-∅360mm	B200A-C, B300A-C, B350A-C, B400A-C, S500A, S500B, S550T, S650A, S650C
Steel for mineral grinding balls		Rolled bars	∅65-∅360mm	LT-B2, LT-B3, LT-B6, MG300, 75105A