Product Details

STKM 13C Seamless honed pipe for hydraulic cylinder

company information :Yan Tai Xinpeng Steel pipe Co., Ltd

Our company main product all kinds of cold drawn precision seamless steel tube and hydraulic precision cylinder tube .we have about 20 years experience of the steel production,and these products are used in hydraulic cylinder ,automobile ,oil drilling ,textil machinery ,etc.

product information:

Production	din2391 ST35 cold drawn seamless precision steel tube with BK
Standard	DIN2391, DIN2445, EN10305, GB/T 3639, GB 8713
Inner Diameter	30mm~250mm
Wall Thickness	0.5mm~18mm
Material	10#~45#,16Mn,Q195~Q345,ST35~ST52
Length	as customers required
Surface treatment	As customers required
Package	1. bundle packing 2. marking as per customer's requests 3. paint on the pipe as per customer request 4. pipe caps as customer reques
Min Order Quantity	According to customer's requirement
Payment terms	L/C, T/T
Contact	If you have any questions, please feel free to contact me.
Delivery conditions	1. NBK(+N) after cold forming, eventually above phase transition point, in a protective atmosphere of annealing oxidation medium 2. GBK(+A) after cold forming, annealing in non oxidizing medium protective gas 3. BK(+C) the final heat treatment after cold forming, therefore small steel pipe plastic, the plastic degree does not guarantee 4. BKW(+LC) after final heat treatment, a tiny cold drawing deformation, continue again when machining steel pipe allowed inside certain limits cold deformation(bending, flaring) 5. BKS(+SR) have a stress relief after cold forming, heat treatment, steel pipe can be carried out within a certain limit in the appropriate processing again

about the dimension

OD	GB/T3639(GB8713)	DIN2391(EN10305)	Our Tolerence	Best Quality
4-30mm	±0.10mm	±0.08mm	±0.05mm	±0.02mm
31-40mm	±0.15mm	±0.15mm	±0.05mm	±0.03mm
41-50mm	±0.20mm	±0.20mm	±0.05mm	±0.03mm
51-60mm	±0.25mm	±0.25mm	±0.08mm	±0.03mm
61-70mm	±0.30mm	±0.30mm	±0.10mm	±0.05mm
71-160mm	±0.30mm	±0.30mm	±0.10mm	±0.05mm
Tolerance in WT	±0.12mm	±0.10mm	±0.05mm	±0.03mm

Process	Diameter	Length	Precision	Inner Hole Roughness
Cold Rolled	30-100mm	≤12 m	H8-H10	0.4-1.6
Cold Draw	30-250mm	≤12 m	H8-H10	0.8-1.6
Honing	40-500mm	≤12 m	H8-H9	0.4-0.8
Rolling	40-400mm	≤7 m	H8	0.4

Inner Diameter	H8	H9	H10
30mm	±0.033	±0.052	±0.084	5-30mm
30-50mm	±0.039	±0.062	±0.100	±0.080
50-80mm	±0.046	±0.074	±0.120
80-120mm	±0.054	±0.087	±0.140
120-180mm	±0.063	±0.100	±0.160
180-250mm	±0.072	±0.115	±0.185
250-315mm	±0.081	±0.130	±0.210
315-400mm	±0.089	±0.140	±0.230

packaging &delivery

•bundle packing

•marking as per customer's requests

• paint on the pipe as per customer request

• pipe caps as customer request

Standard packing with plastic caps and strapped bundles, standard weight approx 1500kg

Commercial length 2000~10500mm,custom lengths upon request

Surface protection

our services

1. Cargo track service during transporting and feedback service after cargo

2. Flexible terms of payment by

3. Big discount for repeat customers

4. Smooth delivering procedure

5. Payment Terms: T/T , L/C And so on.

our processing

our testing

1.100% PMI,Spectro Chemical Aanlysis Test for Raw Material

2.100% Dimension & Visual Examination

3. Mechanical Properties Test Include Tension Test,Flaring Test (For Seamless tube/pipe)/ Flange Test (For Welded Pipe & Tube), Hardness Test ,Reversed Flattening Test

4.100% Hydrostatic Test or 100% NON-DESTRUCTIVE Test (ET or UT)

5.Radiographic Test for Welded Pipe (shall be accordance with specification,or shall be as agreed upon between the purchaser and vendor)

6.Straightness Test (optional)

7.Roughness Test (optional)

8.Intergranular Corrosion Test(optional)

our equirement

our certificate

FAQ

What is the advantage of our company ?

1.Rapid response on any inquiry.

2.Competitive price with best service .

3.Professional inspection department to guarantee quality.