Tubes China - The One-stop Tubes Supermarket !

Tubes China -- a professional company to supply honed tubes and piston rods in China

Products’ range:

Honed tubes: ￠20mm -500mm

Piston rods: ￠10mm -200mm

(Detailed specification as per below)

Honed tubes comply with the standard of DIN 2391 and reach the precision of H8 and can be honed or burnished as per customer’s requirement of the roughness of inner diameter. Tubes can be made polished by cold rolled plus honed.

The thickness of chrome layer on piston rods is more than 0.03mm and the rods pass tempering.

Furthermore, we have set up a joint venture with Wuxi Beilai and now can supply honed tubes in huge quantity and in shorter delivery time.

More details pls check our production base – Zhangjiagang Tubes China

Products:

Precise seamless steel tube

Honed tubes 1.honed cylinder tube

2.Honed mechanical tube

3.SRB tube

Piston rod

Material: st45(20#)
ck45(45#) 16MN 27SiMn

【Product Name】 Precise seamless steel tube

【Product Info】

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	0.3-1.0	H8-H10	0.8-1.6
Grinding	40-500	≤12M	1000	H8-H9	0.4-0.8
Rolling	40-400	≤7M	1000	H8	0.4

Mechanical performance

Model	Item	Cold drawn (rolling) tube	metallic cut pipe
20	Intensity of tensionσbN/mm²	≥510	≥390
20	Elongation rate δ5%	≥5	≥20
45	Intensity of tension σbN/mm²	≥647	≥590
45	Elongation rateδ5%	≥4	≥4
16Mn	Intensity of tensionσbN/mm²	≥640
16Mn	Elongation rateδ5%	≥10
27SiMn	Intensity of tensionσbN/mm²	≥840
27SiMn	Elongation rateδ5%	≥7.5

Size tolerance

Inner diameter

warp of wall thickness

H10

+0.033

+0.052

+0.084

±5%

＞30-50

+0.039

+0.062

+0.100

＞50-80

+0.046

+0.074

+0.120

＞80-120

+0.054

+0.087

+0.140

＞120-180

+0.063

+0.100

+0.160

＞180-250

+0.072

+0.115

+0.185

＞250-315

+0.081

+0.130

+0.210

＞315-400

+0.089

+0.140

+0.230

Specification

Inner diameter mm	Outer diameter mm	Wall thickness mm	Weight kg/m	Inner diameter mm	Outer diameter mm	Wall thickness mm	Weight kg/m	Inner diameter mm	Outer diameter mm	Wall thickness mm	Weight kg/m
30	36	3	2.44	90	114	12	30.18	160	170	5	20.34
30	40	5	4.32	100	108	4	10.26	160	172	6	24.56
40	45	2.5	2.62	100	114	7	18.47	160	180	10	41.92
40	51	5.5	6.17	100	121	10.5	28.61	160	184	12	50.90
50	55	2.5	3.24	100	127	13.5	37.79	160	194	17	74.20
50	60	5	6.78	110	119	4.5	12.71	180	192	6	27.52
50	63	6.5	9.06	110	133