High Strength Cylinder Pipe
 
1、Product Features
High strength cylinder pipe has high strength & tenacity, brittle fracture resistance and good weldability. S700 and S890 high strength cylinder pipes also have good hardenability and uniform performance after heat treatment. They are especially suitable for manufacturing high strength cylinders with large OD, medium & large wall thickness.

2、 Production Range
OD: 42mm～760mm                      WT: 4mm～120mm

3、Standard and Steel Grade
Technical standards: GB/T 8162, GB/T 17396 or technical agreement.

Requirements for Mechanical Properties
Steel Grade	Delivery Condition	Tensile (MPa)	Yield (MPa)	Elongation (%)	R.A. (%)	Absorbed-engergy (J)
		Not Less Than
27SiMn	Quenching+Tempering	980	835	12	40	20℃(AKU2)	39
30CrMnSiA	Quenching+Tempering	1080	835	10	35	20℃(AKU2)	39
30CrMoA	Quenching+Tempering	930	735	12	50	20℃(AKU2)	71
20MnTiB	Quenching+Tempering	1050	930	10	45	20℃(AKU2)	50
S700	Quenching+Tempering	750	650	14	40	-20℃(AKV2)	47
S890	Quenching+Tempering	810	700	14	35	-40℃(AKV2)	60

 
4、 Application Fields
High strength cylinder pipe are mainly used for hydraulic support of coal collection face, hydraulic cylinder, engineering machinery, ship lock and offshore platform etc.