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今天:
 
 
 
 
·冷轧精密无缝钢管
Cold Rolled Precision Seamlesss Steel Pipe
·直缝电焊钢管
Longitudinal Electric Resistance Welded Steel Tube
 
1、执行标准:GB/T 13793-2008  直缝电焊钢管
  DIN2394 焊接与定径精密钢管
  EN10305-3 焊接冷定径钢管
  ASTM A513 焊接碳钢与合金钢机械管
  也可根据用客户要求订制各种特殊要求的产品。
  Standard of implementation:
  GB/T 13793-2008 Longitudinal electric resistance welded steel tubes
  DIN2394 Welded and size precision steel tube
  EN10305-3 Welded cold size tubes
  ASTM A513 Electric-resistance-welded carbon and alloy steel mechanical tubing
  Can also prouct a variety of special requirement produce according to the requirements of customers.

2、常用牌号化学成份、机械性能Chemical composition, mechanical properties of common grades

  焊接钢管常用牌号化学成份Chemical composition(%) of welded tube’s common grades

标准 Standard
牌号Grade
化学成份% Chemical Composition(%)

C

Si

Mn

S

P

Cr

GB700
Q/BQB402
Q/BQB303

Q195

≤0.12

≤0.30

≤0.50

≤0.040

≤0.035

 

Q215

≤0.15

≤0.35

≤1.2

≤0.045

≤0.045

 

Q235B

≤0.20

≤0.35

≤1.4

≤0.045

≤0.045

 

SPCC

≤0.15

≤0.05

≤0.60

≤0.025

≤0.035

 

SS400

≤0.21

≤0.30

≤1.4

≤0.035

≤0.035

 

  焊接钢管常规机械性能Conventional mechanical properties of welded tube

标准Standard

牌号Grade

软状态Soft conditions

低硬状态 Low-hand conditions

抗拉强度σb(MPa) Tensile stength

断后伸长率δ5(%)
Make percentage elongation

抗拉强度σb(MPa) Tensile stength

断后伸长率δ5(%)
Make percentage elongation

GB/T13793
Q/BQB402 Q/BQB303

Q195

≥315

≥22

≥335

≥14

Q215

≥335

≥22

≥355

≥13

Q235A

≥375

≥20

≥390

≥9

SPCC

≥270

≥36

-

-

SS400

400-510

≥26

-

-

3、常用规格尺寸公差Dimensional tolerances of common specifications

  焊接钢管常用规格尺寸公差对照表Dimensional tolerances of welded tube’s common specifications table


GB/T13793

尺寸dimension

高级精度
First accuracy

较高精度
Second accuracy

普通精度
Third accuracy

外径 OD

8~20mm

±0.10mm

±0.20mm

±0.30mm

21~50mm

±0.15mm

±0.30mm

±0.50mm

51~80mm

±0.30mm

±0.50mm

±1.0%Dmm

壁厚
Wallthickness

0.50~0.60mm

+0.03mm
-0.05mm

±0.06mm

±0.10mm

0.65~0.80mm

+0.04mm
-0.07 mm

±0.07mm

0.85~1.0 mm

±0.08mm

1.0 ~1.2mm

+0.05 mm
-0.09 mm

±0.09mm

±10%

1.2 ~1.4mm

±0.11mm

1.4 ~1.5mm

+0.06 mm
-0.11mm

±0.12mm

1.5~1.6mm

±0.13mm

*特殊要求根据顾客的技术协议执行。Implement special requirements in accordance with customers’ technology agreement.

4、生产能力与范围 Capacity and scope of production

5、应用领域Applications
 ◆ 家具用管。Furniture
 ◆ 装饰用管 Decorative
 ◆ 窗帘用管 Curtain
 ◆ 注塑用伸缩杆Telescopic tube used in plastic injection
 ◆ 汽车及精密机械产品用管Automotive and precision machinery

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