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Product: astm steel pipes from professional factory
Technical specification: Suitable for hydraulic cylinder tube
Grade:20# 45# 16Mn 25Mn 27SiMn
Outer diameter: 30-250mm
Wall thickness: 2-30mm
ID tolerance: H7 H8 H9
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
Payment terms: T/T, or L/C or as client's request
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.
Dimension Tolerance
OD(mm) |
ID(mm) |
Tolerance |
||||
OD(mm) |
ID(mm) |
Wall thickness deviation(mm) |
Ovality(mm) |
Curvature(mm/m) |
||
40-74 |
30-65 |
±0.01 |
-0.3,-0.5 |
≤0.5 |
≤0.1 |
0.3 |
74-98 |
65-85 |
±0.01 |
-0.4,-0.6 |
≤0.5 |
≤0.15 |
0.3 |
100-116 |
85-100 |
±0.02 |
-0.4,-0.6 |
≤0.6 |
≤0.15 |
0.3 |
124-134 |
110-115 |
±0.02 |
-0.6,-0.8 |
≤0.6 |
≤0.20 |
0.3 |
140-158 |
120-135 |
±0.02 |
-0.7,-0.9 |
≤0.8 |
≤0.20 |
0.3 |
165-176 |
140-150 |
±0.02 |
-0.7,-0.9 |
≤0.8 |
≤0.20 |
0.3 |
188-203 |
160-180 |
±0.02 |
-0.7,-0.9 (honed) |
≤0.8 |
≤0.20 |
0.3 |
Packing&Shipping
1. bundle packing
2. marking as per customer's requests
3. paint on the pipe as per customer request
4. pipe caps as customer request
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 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
Company introduction
Established in December 1992, with registered capital of 5 million yuan and plant and office space of 12,000 square meters, covering an area of 20,000 square meters , our company mainly produces various specifications of cold drawn,rolled precision steel tube,hydraulic cylinder tube and SRB Tube, which are widely used in such industries as hydro-cylinder, automobile, engineering machinery, textile machinery, printing machinery, oil drilling, etc. Our company is also the distributor of several domestic well-known steel tube plants in Shandong, and mainly distributes seamless steel tubes of all kinds of materials.
Application
Widely used in hydraulic system with precision steel tube,injection molding machine with precision steel tube, hydraulic press machien with precision steel tube, shipbuilding with steel tube, EVA foaming, hydraulic machine, hydraulic cutting machine, shoemaking machine, hydraulic equipment, hydraulic tubing,, engineering machine, textile machine, printing machine, oil drilling and other field.
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