Manufacture diameter polished inside honed steel tube

 

 

 

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.

 

 

 

 

 

Products  Description

Product Name :  inch diameter polished inside honed steel tube

Shape : Round

Outer Diameter: 30 - 250 mm

Thickness: 2 - 30 mm

Grade : 20# 45# 25Mn Q345

ID tolerance:H8 H9

Delivery Condition: BK/BKW/BKS/GBK/NBK

Technique : Cold drawn+SR

Technical specification : suitable for SK+RB/Honed or skived and telescopic hydraulic cylinder tube

Surface quality : Good quality after coating

Delivery Time: Within 20-30 days after receiving payment or as client’s request

Trade Terms: FOB Yantai, Qingdao, or as client’s request

Payment Terms: T/T or L/C or as client’s request

Supply Ability: 500 metric tons/per month

 

TOL：

ID size	ID deviation (mm)
	H7	H8	H9	H10
30	+0.021 0	+0.033 0	+0.052 0	+0.084 0
>30~50	+0.025 0	+0.039 0	+0.062 0	+0.100 0
>50~80	+0.030 0	+0.046 0	+0.074 0	+0.120 0
>80~120	+0.035 0	+0.054 0	+0.087 0	+0.140 0
>120~180	+0.040 0	+0.063 0	+0.100 0	+0.160 0
>180~250	+0.046 0	+0.072 0	+0.115 0	+0.185 0
>250~315	+0.052 0	+0.081 0	+0.130 0	+0.210 0
>315~400	+0.0527 0	+0.089 0	+0.140 0	+0.230

 

1.Seamless steel tube

Widely 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 also offer ascustomized seamless steel tube.

 

2.cold drawn/rolled steel tube

Grade: 20# 45# 16Mn 25Mn 27SiMn E355 SAE1026

Standard: GB/T8713 GB/T3639 DIN2391 EN10305 ASTMA519

Range: 30-300mm

Length: 11m(max)

The cold process can change the thickness of tube to meet client's request and offer better mechanical property.

 

3. SRB&Honed steel tube

ID Tolerance: H8 H9

ID Roughness: RA0.4micron(max)

Length: 6m(max)

Inner roughness: Ra0.2-0.8um

Straightness: 1:1000 or customized

This process can improve the roughness of the inner tube to 0.2-0.8um and make inside tube smoother which can be used for cylinder directly.

 

 

Mechanical property

Working method: Cold drawn+SR

Steel grade	Tensile strength(Rm Mpa)	Yield strength(ReH Mpa)	Elongation	Hardness
20#	≥520	≥375	>15	＞85
45#	≥600	≥520	>15	>85
STKM13C-T(Mn)	≥600	≥530	>15	>85
Q345D	≥600	≥520	>12	>85

 

Packing &Delivery

Packing：

Standard package with plastic bags and strapped bundles or as client's request totally

Delivery time :

Shipped in 30 days after payment

 

Usage

Seamless steel pipes for low and medium pressure boiler, high pressure boiler, ship-building, liquid service , petroleum cracking, chemical fertilizer equipment,drawing-oil-equipment and structure purposes.

 

Certification

 

FAQ

1. What is your terms of delivery?

We accept FOB Yantai, Qingdao or as client’s request.

2.What’s your main market?

We have contacted with many countries all over the wold such as Korea, Iran, Ukraine, Pakistan and so on.

3.What’s your package?

Usually, we have standard package with plastic bags, or wooden cartons or as client’s request.

4.What about your quality?

Strictly followed by ISO9001 system, all our products are in high quality control and tight tolerance.

5.What about the delivery time?

Usually, we will arrange the cargo within 20-30 days after receiving your payment or as client's request as soon as possible because of the stock.

6. Why buy from your company?

We are professional manufacturer and we can offer competitive pricing, fast turnaround times, quick worldwide delivery, excellent procurement capabilities for even the most difficult-to-find parts, and more than 20 years of combined experience.

 

Service

1.100% quality satisfaction guarantee following with ISO9001 verified

2. professional package which can assure long distance sea transportation

3. delivery in time

4. more than 20 years experience specializing in steel trading line

5.alibaba trade assurance supplier