grade 20 cold finished steel pipe in reasonable price
USD $600 - $1,000 /Metric Ton
Min.Order:5 Metric Tons
Yantai Xinpeng Steel Pipe Co., Ltd.
Product: Cold finished steel pipe
Grade:20# 45# Q345 25Mn 27SiMn
Outer diameter: 30-250mm
Wall thickness: 2-30mm
Length: Max 11m
ID tolerance: H7 H8 H9 or customized
Delivery condition: BK/BKW/BKS/GBK/NBK
Trade terms: FOB Yantai, Qingdao or as client's request
Payment terms: T/T, or L/C or as client's request
The difference between precision steel pipe and seamless pipe?
1. the seamless steel tube with obvioue difference is that dimensional accuracy, can be up to 0.1mm.
2. high precision steel pipe diameter surface finish, the customer without processing can be used directly and ordinary seamless steel tube to the customer and lather, polishing processing.
3.Superior surface finish
4.Dimensional accuracy and excellent micro-structure uniformity
Dimensions 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 |
Mechanical Property
Delivery Condition | Cold drawn+stress-relieved(BK+S)(SR) | Cold finished(hard)(BK) | |||
Steel Grade | Tensile strength (Rm Mpa)
| Yield strength (ReH Mpa)
| Elongation A5% | Tensile strength (Rm Mpa)
| Elogation A5%
|
20# | ≥520 | ≥375 | ≥15 | ≥550 | ≥8 |
45# | ≥600 | ≥520 | ≥10 | ≥640 | ≥5 |
16Mn(Q345B Q345D) | ≥600 | ≥520 | ≥14 | ≥640 | ≥5 |
25Mn | ≥600 | ≥510 | ≥15 | ≥640 | ≥5 |
27SiMn | ≥760 | ≥610 | ≥10 | ≥800 | ≥5 |
St45 | ≥520 | ≥375 | ≥15 | ≥550 | ≥5 |
E355(St52) | ≥600 | ≥520 | ≥14 | ≥640 | ≥5 |
SAE1026 | ≥600 | ≥510 | ≥15 | ≥640 | ≥5 |
Packing and 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 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 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 customer
We supply various specifications of steel pipe , such as cold drawned or cold rolled steel pipe, stress relieved steel pipe, honed or SRB steel pipe, polished steel pipe, and so on.
Waiting for your contact!