export cold drawn honed seamless steel tube GB/T3639

Article

Surface

according to the customer’s acquirement

Length

1m - 6m or as your requirement

W.T.

2-30mm

O.D.

30-250mm

Application

Vehicles, engineering machinery hydraulic chassis, air piping system, etc

Packing

We usually bundle with steel strips ,branding parcel ,wooden box

Terms conditions

CIF,CFR,FOB

Payment

should be 30% in advance by T/T and the balance upon B/L copy or L/C.

Delivery Time

25 days after received the deposit by T/T

Note

we can produce other standard as the customers' requirement

Size of I.D

I.D Tolerance

Tolerance of wall thickness

H8

H9

H10

±7.5%

>210mm ±10%

30

+0.0330

+0.0520

+0.0840

>30-50

+0.0390

+0.0620

+0.1000

>50-80

+0.0460

+0.0740

+0.1200

>80-120

+0.0540

+0.0870

+0.1400

>120-180

+0.0630

+0.1000

+0.1600

>180-250

+0.0720

+0.1150

+0.1850

>250-315

+0.0810

+0.1300

+0.2100

40*50

90*110

140*170

190*215

40*55

95*110

145*170

190*220

50*60

95*115

150*170

190*225

50*65

100*110

150*175

200*220

55*70

100*114

150*180

200*225

60*70

100*115

155*180

200*230

60*75

100*120

160*175

200*245

60*78

100*125

160*180

200*250

63*73

105*125

160*185

220*250

63*75

110*125

160*190

220*270

63*76

110*130

160*195

225*250

63*78

115*130

165*190

240*273

65*80

115*135

165*205

250*290

70*80

120*140

170*200

250*300

70*82

125*140

180*200

260*300

70*85

125*145

180*205

280*323

70*90

125*150

180*210

280*355

75*90

130*150

180*215

300*350

80*92

130*155

180*220

200*213

80*95

130*160

185*205

200*216

80*100

135*160

185*215

250*266

85*100

140*160

185*220

90*105

140*165

190*210

     Application

Cold drawn or cold rolled precision seamless steel tubes

for hydraulic pressure and pneumatic services.

For Auto use,machinery use,oil cylinder tube,motorcycle

shock reducer use,auto shock reducer inner cylinder,gas spring use etc.

Seamless steel pipes for low and medium pressure boiler, 

high pressure boiler, ship-building,Liquid service, petroleum cracking,

 chemical fertilizer equipment,Drawing-oil-equipment and structure purposes.

1.100% PMI,Spectro Chemical Aanlysis Test for Raw Material

2.100% Dimension & Visual Examination 

3. Mechanical Properties Test Include Tension Test,Flaring Test (For Seamless tube/pipe)/ Flange Test (For Welded Pipe & Tube), Hardness Test ,Reversed Flattening Test

4.100% Hydrostatic Test or 100% NON-DESTRUCTIVE Test  (ET or UT) 

5.Radiographic Test for Welded Pipe (shall be accordance with specification,or shall be as agreed upon between the purchaser and vendor)

6.Straightness Test  (optional)

7.Roughness Test (optional)

8.Intergranular Corrosion Test(optional)

9.Impact Test (optional)

10.Grain Size Determinations (optional)

NOTES : ALL THE TESTS AND INSPECTION RESULT NEED TO BE SHOWED IN REPORTS ACCORDING TO STANDARD AND SPECIFICATION.