Limestone Quarry Plant

One of the Top 500 enterprises in China foreign trade

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

 


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