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stainless steel seamless pipe

316L stainless steel seamless pipe

About 316L stainelss seamlesssteel pipe

316L is the daily life of the total use of a lot of seamless pipe. Because 316L has a good use of performance and corrosion resistance characteristics, in the industry, the chemical industry has been recognized by the majority of.  

 In particular, 316L seamless pipe, is one of the world's most used seamless tube.Generally 316L seamless tube surface for acid white surface. Of course, if the customer main on demand, we can carry out polishing on the surface.



Standards for Specifications and appearance quality

A: GB14975-2002/ASTM A240

Hot rolling length:1.5m-10.0mm. hot extrusion length:≥1m.  Cold rolling: wall thickness0.7mm-1.0mm,lenght1.0m-7.0m.Wall thickenss≥1.0mm,the lenght must be 1.5m-8.0mm.


B:Hot rolling technical: Outsise meter - 54.0mm-480mm.  Wall thickness - 4.5mm-45mm.

Cold rolled technical: Outside meter - 6.0mm-200mm.   Wall thickness - 0.5mm-21mm.


C: Standards for wall thickness:

Both inside and outside the pipe surface shall not have cracks, folding, cracking, crack, rolling reduction, separation and scarring 

and defects, these defects should be completely removed (except for machining tube), after the removal of the outer wall thickness and shall not exceed the negative deviation. Where no more than the allowable negative deviation of the other minor surface defects can not be cleared.


D:Straight channel depth. Hot rolled, hot extruded steel pipe, the diameter is less than or equal to 140mm less than 5% of the nominal wall thickness, the maximum depth of not more than 0.5mm; cold drawing (rolling) steel is not greater than 4% of the nominal wall thickness, the maximum depth of not more than 0.3mm.


E: Both ends of the steel pipe should be cut into a right angle, and remove the burr.


Theoretical weight for cold rolling stainelss seamless steel pipe (KG/M)

WT
0.50.60.70.80.91.01.21.52.02.53.03.5
OD
9.50.1110.1310.1510.1710.1900.2090.2450.295--------
12.70.1500.1790.2070.2340.2610.2880.3400.414--------
15.90.2260.2620.2970.3320.3670.4350.5320.685------
190.2280.2720.3150.3590.4010.4430.5260.6470.8381.017----
220.2650.3160.3670.4180.4680.5170.6150.7580.9861.202----
250.3020.3610.4190.4770.5340.5910.7040.8691.1341.387----
280.4710.5360.6010.6650.7930.9801.2821.572----
31.80.4610.5360.6110.6850.7590.9051.1201.4691.8062.1312.442
38.10.6450.7350.8250.9141.0191.3531.7802.1942.5962.986
50.80.8640.9861.1071.2281.4671.8232.4062.9773.5364.082
601.0231.1671.3111.4541.7402.1632.8603.5444.2164.876
63.51.2361.3891.5411.8432.2933.0333.7604.4755.178
76.21.6711.8542.2192.7633.6594.5435.4156.274
88.92.5953.2324.2855.3266.3547.371
101.62.9713.7024.9126.1097.2948.467
1083.1603.9395.2276.5047.7679.019
1143.3374.1615.5236.8738.2119.537
1273.7224.6426.1657.6759.17310.659
1333.9004.8646.4618.0459.61711.177
1414.1365.1606.8558.53810.20911.867
1595.8257.7439.64811.54113.385
1688.18710.20312.20614.197
21910.70013.34716.97918.599
--
--
Remark: For hot rolling technical: Wall thickness - 2.0mm-45.0mm. Outside meter - 54.0mm - 480mm

Chemical compostion

GradeC(%)Si(%)Mn(%)Cr(%)P(%)S(%0N(%)Ni(%)Cu(%)
316L≤0.04≤1.00≤2.0016.0-18.0≤0.045≤0.032.0-3.010.0-14.0---

Physical property

Gradetensile strength
(Mpa)
Yield Strength
(Mpa)
Elongation
(%)
316L≥480≥177≥40

From the above table, we can see that 316L materials have very good mechanical properties, in the field of industrial application can not meet the processing requirements.


Finish processing

Usually the finish of the original material of seamless pipe is Acid white surface after produced from the steel mill.But we can process the finish according to customer's requirements.We can process it into bright finish,usually we call it 2B finish in China,or keep processing based on the 2B finish.



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