What we focus on are:

--Tight tolerance

--High quality

--Good mechanical property

--Quick delivery

--Best service

--Reasonable price

What we can provide are:

--Seamless steel tube

--Carbon steel tube

--Cold drawn steel tube

--Cold rolled steel tube

--Honed steel tube

--SRB steel tube

--Hydraulic Cylinder Pipe

--Hydraulic steel tube

--Cylinder steel tube

......

1.Product Name: annealed steel pipe CK45 Cylinder And Elevator Buffer Using steel tube

2.Outer Diameter: 30-250mm

3.Wall Thickness: 2-30mm

4.Material Grade: 20# 45# Q345 16Mn 25Mn Q345 27SiMn E355 ST52 CK45 STKM13A STKM13C

5.Package: Standard export packing or as client’s request

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

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

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

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

10.Supply Ability: 500 metric tons/per month

11.Origin: China

12.Application: widely used for hydraulic cylinder, engineering machinery, textile machinery, printing machinery, excavator, automobile parts, hydraulic parts, oil drilling and other field.

13.What we can provide are seamless steel tube, carbon steel tube, cold drawn steel tube, cold rolled steel tube, honed steel tube, hydraulic cylinder steel tube, and so on.

What we can provide are:

--Seamless steel pipe

--Carbon steel pipe

--Cold drawn steel pipe

--Cold rolled steel pipe

--Honed steel pipe

--Hydraulic Cylinder Pipe

--Hydraulic steel pipe

--Cylinder steel pipe

......

Our Company

Established in December 1992, with registered capital of 5 million yuan and plant and office space of 12,000 square meters,  our company mainly produces various specifications of seamless steel pipe and cold drawn steel tube, cold rolled steel tube, honed steel tube, hydraulic cylinder tube and SRB steel tube, which are widely used in such industries as hydro-cylinder, automobile parts, hydraulic parts, engineering machinery, textile machinery, printing machinery, oil drilling, excavator, etc.

What we can provide are seamless steel tube, cold drawn steel tube, cold rolled steel tube, honed steel tube, SRB steel tube, hydraulic steel tube, cylinder steel tube, and so on.

Our Main products of carbon tube

1.Seamless steel tube and carbon tube

Widely used in the hydraulic cylinder of the heavy machinery, Cranes, excavator also forklifts. Material is various, mainly STKM-13C, ST52,E355, ASTM1045, and so on. We can also offer ascustomized seamless steel tube.

ld drawn steel pipe/cold rolled steel tube

Grade: 20#  45#  Q345 16Mn  25Mn  27SiMn  E355  ST52 CK45 STKM11A STKM13A

Standard: GB/T8713  GB/T3639  DIN2391  EN10305  ASTMA519

Range: 30-250mm

Length: 11m(max)

The cold process can improve the mechanical property of the pipes and offer better tolerance, also can change the ID, OD, WT to meet every client's request.

 3. Honed steel tube and SRB steel pipe

ID Tolerance: H8  H9 or as client's request

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 tube for cylinder using directly.

4.Hydraulic cylinder steel pipe, hydraulic tube, cylinder tube

Our Process of carbon tube

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

Packing&Shipping of carbon tube

Packing of hydraulic cylinder tube:

Usually we use plastic bags and bundled ,or wooden cartons outside to sustain long sea trasportation.

Or we can package as client's request totally.

Shipping of hydraulic cylinder tube:

Within 20-30 days after receiving your payment or as client's request

Delivery condition of seamless pipe

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 plastically, the plastically 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

Our Certificate of hydraulic cylinder pipe

Strictly according to system verified ISO9001:2008, all our seamless steel tube are in high quality control and tight tolerance to satisfy every client without quality problem.

FAQ of seamless pipe

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 seamless steel tube 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. 

If you are interested in our carbon tube, pls don’t hesitate to contact us, and we’ll do our best for you !