carbon pipe steel in heavy demand
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QCCO was approved as a member of “China Association for Contracting Projects Abroad “and granted a membership certificate on Sep 28,2005; “Credibility Rating AAA certificate in Foreign Trade” was granted to QCCO by China Shippers’ Association
carbon pipe steel in heavy demand
carbon pipe steel
our company specialized in steel tubes and fittings.
carbon pipe steel
Standards: GB,ASTM ,ASME,JIS , DIN,BS etc.
Material: carbon steel ,alloy steel stainless steel , or as per clients requirement!
Specification: O.D:38mm-325mm
W.T.:1mm-110mm
Dimensions ,Mechanical, Properties , Compositions, Chemical,
Refer to telative standard or as per clients requests
Packing : Caps on two ends ,in boundles or according to the customers' requests
Hydraulic Steel Tube
Seamless steel tube for hydraulic and pneumatic cylinder use
|
Processing mode |
Diameter |
Length |
Linearity |
Precision |
Roughness of inner hole |
|
Cold rolling |
30-100 |
≤12M |
0.3-1.0 |
H8-H10 |
0.4-1.6 |
|
Cold drawn |
30-250 |
≤12M |
H8-H10 |
0.8-1.6 |
|
|
Grinding |
40-500 |
≤12M |
1000 |
H8-H9 |
0.4-0.8 |
|
Rolling |
40-400 |
≤7M |
H8 |
0.4 |
Mechanical performance
|
Model |
Item |
Cold drawn (rolling) tube |
metallic cut pipe |
|
20 |
Intensity of tensionσbN/mm2 |
≥510 |
≥390 |
|
Elongation rate δ5% |
≥5 |
≥20 |
|
|
45 |
Intensity of tension σbN/mm2 |
≥647 |
≥590 |
|
Elongation rateδ5% |
≥4 |
≥4 |
|
|
16Mn |
Intensity of tensionσbN/mm2 |
≥640 |
|
|
Elongation rateδ5% |
≥10 |
|
|
|
27SiMn |
Intensity of tensionσbN/mm2 |
≥840 |
|
|
Elongation rateδ5% |
≥7.5 |
|
Size tolerance
|
Inner diameter |
|
warp of wall thickness |
||
|
H8 |
H9 |
H10 |
||
|
30 |
+0.033 0 |
+0.052 0 |
+0.084 0 |
±5% |
|
30-50 |
+0.039 0 |
+0.062 0 |
+0.100 0 |
|
|
50-80 |
+0.046 0 |
+0.074 0 |
+0.120 0 |
|
|
80-120 |
+0.054 0 |
+0.087 0 |
+0.140 0 |
|
|
120-180 |
+0.063 0 |
+0.100 0 |
+0.160 0 |
|
|
180-250 |
+0.072 0 |
+0.115 0 |
+0.185 0 |
|
|
250-315 |
+0.081 0 |
+0.130 0 |
+0.210 0 |
|
|
315-400 |
+0.089 0 |
+0.140 0 |
+0.230 0 |
|
