Product Details

Our company

Established in December 1992, with registered capital of 5 million yuan and plant and office space of 12,000 square meters, covering an area of 20,000 square meters , YANTAI XINPENG STEEL PIPE CO., LTD. mainly produces various specifications of cold drawn,rolled precision steel tube,hydraulic cylinder tube and SRB Tube, which are widely used in such industries as hydro-cylinder, automobile, engineering machinery, textile machinery, printing machinery, oil drilling, etc. Our company is also the distributor of several domestic well-known steel tube plants in Shandong, and mainly distributes seamless steel tubes of all kinds of materials.

Mechanical Property

Delivery Condition	Cold drawn+stress-relieved(BK+S)(SR)			Cold finished(hard)(BK)
Steel Grade	Tensile strength (Rm Mpa)	Yield strength (ReH Mpa)	Elongation A5%	Tensile strength (Rm Mpa)	Elogation A5%
20#	≥520	≥375	≥15	≥550	≥8
45#	≥600	≥520	≥10	≥640	≥5
16Mn(Q345B Q345D)	≥600	≥520	≥14	≥640	≥5
25Mn	≥600	≥510	≥15	≥640	≥5
27SiMn	≥760	≥610	≥10	≥800	≥5
St45	≥520	≥375	≥15	≥550	≥5
E355(St52)	≥600	≥520	≥14	≥640	≥5
SAE1026	≥600	≥510	≥15	≥640	≥5

Dimension Tolerance

OD(mm)	ID(mm)	Tolerance
OD(mm)	ID(mm)	OD(mm)	ID(mm)	Wall thickness deviation(mm)	Ovality(mm)	Curvature(mm/m)
40-74	30-65	±0.01	-0.3,-0.5	≤0.5	≤0.1	0.3
74-98	65-85	±0.01	-0.4,-0.6	≤0.5	≤0.15	0.3
100-116	85-100	±0.02	-0.4,-0.6	≤0.6	≤0.15	0.3
124-134	110-115	±0.02	-0.6,-0.8	≤0.6	≤0.20	0.3
140-158	120-135	±0.02	-0.7,-0.9	≤0.8	≤0.20	0.3
165-176	140-150	±0.02	-0.7,-0.9	≤0.8	≤0.20	0.3
188-203	160-180	±0.02	-0.7,-0.9 (honed)	≤0.8	≤0.20	0.3