NEW-ERA STEEL TUBE TECHNOLOGY CO.,LTD

NEW-ERA STEEL TUBE HOLDING NINGBO PIPEWAY TRADE CO.,LTD

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Hollow Steel 35 Square Steel Steel Pipes Cold Deformed Seamless GOST 8639-82

Hollow Steel 35 Square Steel Steel Pipes Cold Deformed Seamless GOST 8639-82

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Brand Name :New-Era
Model Number :ASTM A500
Certification :ISO9001
Place of Origin :China
MOQ :1ton
Price :Negotiation
Payment Terms :T/T, L/C
Supply Ability :2000tons per month
Delivery Time :20-30days
Packaging Details :bundles packing with plastic bags wrapped
Standard :GOST 8639-82
Production Process :cold deformed seamless
Size :50x5,60x8,100x8,120x8
Shape :rectangular,Square,hexagonal
Material :Steel 10,20,35,45
Length :Maximal 12M
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GOST 8639-82 steel 35 square steel steel pipes , cold deformed seamless hollow section steel tubes

Sizes of square pipes have to confirm the values indicated in the table below:

Outside size A, mm Wall thickness s, mm Section square, cm2 Weight of 1 m pipe, kg, Inertia moment, cm4~ Resistance moment, cm3~
Ix=Iy Wx=Wy
50 5 8.57 6.73 28.26 11.3
60 8 15.54 12.20 67.71 22.57
100 8 28.34 22.25 392.65 78.53
120 8 34.74 27.27 715.66 119.28

Steel density 7/85 g/cm3

Pipe static characteristic is calculated for R=1,5 s

4. Bending radius R should no more than 2 s.

5. Pipes are produced:

Random length

Seamless cold-deformed – 1.5-11m;

Fixed length

Seamless cold-deformed – 4.5-11m;

Multiple lengths

Seamless cold-deformed – 1.5-11m with tolerance for every cut 5 mm;

Total length of multiple length pipes can’t be more than upper limit of fixed length pipe. Tolerance for every ratio is 5mm (if other tolerance is not stipulated) and is a part of every ordered ratio.

6.Limit deviations for outside sizes, wall thickness & sides concavity can’t be more than indicated in the table below:

Parameter name

Limit deviation of pipe size depending

on the precision of production

normal high
Outside sizes +-0.3mm +-0.25mm

Wall thickness:

wall thickness ≤ 3.5mm

wall thickness > 3.5mm

± 12.5%

± 12.5%

± 12.5%

± 10.0%

Sides concavity and convexity:

Up to 50mm

Over 50 to 70mm

Over 70

0.5mm

0.75mm

1.0mm

0.5mm

0.5mm

0.8mm

Coiling of square & rectangular pipes - According to agreement with the customer

7. Thickness variation can’t lead the wall out the limit deviations concerning wall thickness.

8. In pipe cross-section the deviation from right angle can’t be more than ±1.5°.

9. Pipe curvature can’t be more than 2 mm for 1m of length.

Pipes are produced without adjustment, in this case curvature is not regulated.

Hollow Steel 35 Square Steel Steel Pipes Cold Deformed Seamless GOST 8639-82

Hollow Steel 35 Square Steel Steel Pipes Cold Deformed Seamless GOST 8639-82Hollow Steel 35 Square Steel Steel Pipes Cold Deformed Seamless GOST 8639-82

China Hollow Steel 35 Square Steel Steel Pipes Cold Deformed Seamless GOST 8639-82 for sale

Hollow Steel 35 Square Steel Steel Pipes Cold Deformed Seamless GOST 8639-82

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