st37.4 seamless carbon pipe cold drawn honed precision steel tube

products description

The commodity name:    st37.4  seamless carbon pipe cold drawn honed precision steel tube

Size: I.D:30mm~250mm

W.T:0.5mm~18mm

Material grade:10#~45#, 16Mn, ST35~ST52,25Mn,Q345

Length:as customer’s need

Standard: DIN2391, EN10305, GB/T3639, GB8713

Application: hydraulic cylinder, automobile,oil drilling,etc.

Heat Treatment: according to the customer’s need

Payment terms:  L/C, T/T

Delivery time :10days more or according to the customer’s acquirement

delivery condition:

 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

the tolerance of dimension 

the finished products 

company information 

our company located in the beautiful coastal city -Yantai,with convenient transportation ,and our company mianly produces various specifications of cold finished precision steel tube ,witch are widely used in hydraulic and pneumatic cylinder for automobile ,engineering machinery ,textil machinery ,printing machinery ,oil drilling machinery and other welcome to our company to negotiate business.

our packaging and shipping 

1)Delivery time: In 20 days or according to client's requires 

(2)Trade terms: EXW/FOB/CIF etc

(3)Payments: T/T or L/C or according to client's requires

(4)Port: Yantai or Qingdao

(5)MOQ: 5 metric tons or at customer's demands

(6)Packing: we usually bundle with steel strips ,branding parcel or wooden box outside ,or  according to the  customer’s acquirement 

our testing 

 our processing 

application 

cold drawn seamless steel tube widely used in hydraulic system with precision steel tube, injection molding machine with precision steel tube, hydraulic press with precision steel tube, shipbuilding with steel tube, EVA foaming, hydraulic machinery, hydraulic cutting machine, shoe making machinery, hydraulic equipment, high pressure tubing, hydraulic tubing, card sets of joints, pipe joints, rubber machinery, forging machinery, casting machinery, engineering machinery, automotive high pressure steel pipe concrete pump, sanitation vehicle, automobile industry, shipbuilding industry, metal processing, military industry, diesel engine, the internal combustion engine, air compressor, construction machinery, forestry machinery, etc.

our certificate 

FAQ

Why you choose us:

1). Qualified raw materials

2). Advance production equipment

3). Nooxide layer both outer and inner wall. It could be used in hydraulic system directly without any pretreatment

4). Enduring high pressure, no leak, impact resistance

5). High precision, high cleanliness < 0.08 g/m³, fineness around 11 micron

6). No crack while flattening, drft expanding

7). Low defective rate

8). Excellent performace on anti-rust, anti-corrsion

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