Product Details

Product: a53 b seamless steel pipe

Technical specification: Suitable for hydraulic cylinder tube

Grade:20# 45# Q345 25Mn 27SiMn

Tensile strengh: ≥ 600N/mm2

Outer diameter: 30-250mm

Wall thickness: 2-30mm

ID Tolerance: H8 H9 or as customized

Package: standard packing with plastic bags or as client's request

Delivery time: within 20-30 days after receiving downpayment or as client's request

Trade terms: FOB Yantai, Qingdao or as client's request

Benifits:

Superior surface finish
Dimensional accuracy and excellent micro-structure uniformity
Enhanced machinability
High strength to weight ratio
Tight tolerances, resulting in reduced machine time

Company

Located in the beautiful coastal city-Yantai, our company mainly produces various specifications of precision hydraulic steel tube, which are widely used in hydraulic and Pneumatic cylinder for automobile, engineering machinery, textile machinery, printing machinery, oil drilling and other field.

Product

1.Hydraulic Cylinder Tube------Main products of Xinpeng

Used in the hydraulic cylinder of the heavy machinery, Cranes, excavator also forklifts. Material is various, mainly STKM-13CT ST52 CK45 and 1020. We can work and get the mechanical property of the clients need and extended the life of the hydraulic cylinder.

2.SRB tube ----- used in Elevatorbuffer and Hydraulic Cylinder .This kind tube have a better roughness inner the tube, ra0.2-0.4um and can use directly in the hydraulic cylinder tube. Range: ID 50-250mm and Length can work at most 6M.

3.Cold finished tube---- Widely Used. Processing range 30-300mm, biggest length is 11M.

The difference between precision steel pipe and seamless pipe?

1. the seamless steel tube with obvioue difference is that dimensional accuracy, can be up to 0.1mm.

2. high precision steel pipe diameter surface finish, the customer without processing can be used directly and ordinary seamless steel tube to the customer and lather, polishing processing.

3.Superior surface finish

4.Dimensional accuracy and excellent micro-structure uniformity

Process

Equipped with JLB250T hydraulic cold drawn set, LD120 cold rolling set, annealing furnace, strong honed machine, polising machine,lathe,saws CNC skived and roller burnished machine, kinds of testing machine.

Technique and tolerance

Working Method	Range	Size of ID	Tolerance
			ID tolerance			WT(mm)	Ovality	Curvature
			H8	H9	H10	WT(mm)	Ovality	Curvature
Cold Drawn	25-250	>30-50	+0.0390	+0.0620	+0.1000	±5% to 7.5% ID>210mm ±10%	≤0.10-0.20	0.3
Cold rolling	25-150	>50-80	+0.0460	+0.0740	+0.1200
Cold drawn-hone	40-250	>80-120	+0.0540	+0.0870	+0.1400
Cold drawn-SRB	50-250	>120-180	+0.0630	+0.1000	+0.160
Cold drawn-polish	40-250	>180-250	+0.0720	+0.1150	+0.1850
Cold drawn-polish-SRB	50-250	Other size and technique parameter upon request

Mechanical Property

Delivery Condition	Cold drawn+stress-relieved(BK+S)(SR)			Cold finished(hard)(BK)
Steel Grade	Tensile strength (Rm Mpa)	Yield strength (ReH Mpa)	Elongation A5%	Tensile strength (Rm Mpa)	Elogation A5%
20#	≥520	≥375	≥15	≥550	≥8
45#	≥600	≥520	≥10	≥640	≥5
16Mn(Q345B Q345D)	≥600	≥520	≥14	≥640	≥5
25Mn	≥600	≥510	≥15	≥640	≥5
27SiMn	≥760	≥610	≥10	≥800	≥5
St45	≥520	≥375	≥15	≥550	≥5
E355(St52)	≥600	≥520	≥14	≥640	≥5
SAE1026	≥600	≥510	≥15	≥640	≥5