China GOST 9567-75 Precision Steel Tubes

GOST 9567-75 Precision steel tubes
This standard is applied to steel pipes of particular accuracy after cold drawing or hot rolling.
Cold drawing pipes are produced of the following length:
Not fixed length - from 1 to 11.5 m
Fixed length - from 4.5 to 9 m.
Length multiplied fixed length - up to 9 m with allowance 5 mm for each cutting. Per customer request it can be stated another allowance.
Max length deviation for fixed and multiple length are to be + 10 mm.

roduction type of pipesMax deviations Outside diameterWall thickness Sizes, mmDeviationsSizes, mmDeviations Cold drawn pipesUp to 30 including± 0,10 mmFor pipes with OD6 - 108 mm Over30 upto 40 including± 0,15 mmUp to 0,8 including± 0,05 mm Over 40upto 50 including± 0,20 mmOver 0,8 up to 5 including± 7,5 Over50 upto 60 including± 0,25 mmOver 5± 6% Over 60upto 70 including± 0,30 mmFor pipes with ODover 110 mm Over70 upto 80 including± 0,35 mmUp to 2,5 including± 10% Over 80upto 90 including± 0,40 mmOver 2,5 up to 5 including+ 10%, -7,5% Over 90upto 108 including± 0,45 mmOver 5± 7,5% Over 108upto 120 including± 0,50 mmOver120± 0,8%Hot rolled pipesUp to 50including± 0,35 mmUp to 15 including± 10% Over50±0,8%Over 15± 8% If D/S = 4 - 10± 6% Mechanical composition Steel gradeTensile strength, N/mm2 (min)Yield strength, N/mm2 (min)Elongation, % (min)1034320624 2041224521 3551029417 4558932314 40Х618-14 30ХГСА491-18

Chemical composition (%, max) Steel gradeCSiMnCrNiMoSPCu 100,07-0,140,17-0,370,35-0,650,150,3---- 200,17-0,240,17-0,370,35-0,650,250,25-0,030,0250,3 350,32-0,400,17-0,370,50-0,800,250,3-0,040,0350,3 450,42-0,450,17-0,370,50-0,800,25----- 40Х0,36-0,440,17-0,370,50-0,800,80-1,100,3-0,0350,0350,3 30ХГСА0,28-0,340,90-1,200,80-1,100,80-1,100,3-0,0050,025-

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