Product Details

Brand	gb3639 galvanized alloy seamless steel tubing
Material	St35,St45,St52,E215,E235,E355,10,20, A106,A179,A192,A210,T11
Material	T22,T12, AISI4130,SAE1010,SAE1020.etc
Standard	Meet or exceed ASTM,ASME,API,ANSI and DIN standards.
	ASTM A106/A179/A192/A210/A213/A519 etc.
	DIN2391/DIN17175/EN10305 etc
	GB8162/GB8163/GB3639 etc
Technique	Cold Drawn/Cold rolled
Usage	1. auto and motorcycle steel pipe
	2. Gas spring steel Tube
	3. Boiler Pipe
	4. Low and middle pressure fluid transportation pipeline
	5. Hydraulic system steel tube
	6. Electric industry

Application	Cold drawn or cold rolled precision seamless steel tubes for hydraulic pressure and pneumatic services.
	For Auto use,machinery use,oil cylinder tube,motorcycle shock reducer use,auto shock reducer inner cylinder,gas spring use etc.
	Seamless steel pipes for low and medium pressure boiler, high pressure boiler, ship-building,Liquid service, petroleum cracking, chemical fertilizer equipment,Drawing-oil-equipment and structure purposes.

Specification Range of Seamless Steel Pipe
OD(mm)	WALL THICKNESS(mm)
6	1	1.5	2	^_	^_	^_	^_	^_	^_	^_
8	1	1.5	2	2.5	^_	^_	^_	^_	^_	^_
10	1	1.5	2	2.5	3	^_	^_	^_	^_	^_
12	1	1.5	2	2.5	3	^_	^_	^_	^_	^_
14	1	1.5	2	2.5	3	3.5	^_	^_	^_	^_
15	1	1.5	2	2.5	3	3.5	^_	^_	^_	^_
16	1	1.5	2	2.5	3	3.5	^_	^_	^_	^_
18	1	1.5	2	2.5	3	3.5	4	^_	^_	^_
20	1	1.5	2	2.5	3	3.5	4	^_	^_	^_
22	1	1.5	2	2.5	3	3.5	4	^_	^_	^_
25	1	1.5	2	2.5	3	3.5	4	^_	^_	^_
28	1	1.5	2	2.5	3	3.5	4	^_	^_	^_
30	1	1.5	2	2.5	3	3.5	4	5	^_	^_
32	1	1.5	2	2.5	3	3.5	4	5	^_	^_
34	1	1.5	2	2.5	3	3.5	4	5	6	^_
35	1	1.5	2	2.5	3	3.5	4	5	6	7
38	1	1.5	2	2.5	3	3.5	4	5	6	7
40	1	1.5	2	2.5	3	3.5	4	5	6	7
42	1	1.5	2	2.5	3	3.5	4	5	6	7
45	1	1.5	2	2.5	3	3.5	4	5	6	7
48	^_	1.5	2	2.5	3	3.5	4	5	6	7
50	^_	1.5	2	2.5	3	3.5	4	5	6	7
52	^_	1.5	2	2.5	3	3.5	4	5	6	7
54	^_	1.5	2	2.5	3	3.5	4	5	6	7
55	^_	1.5	2	2.5	3	3.5	4	5	6	7
58	^_	1.5	2	2.5	3	3.5	4	5	6	7
60	^_	1.5	2	2.5	3	3.5	4	5	6	7

Dimension tolerance comparison Chart
OD(mm)	GB/T3639	DIN2391(EN10305)	Manufacturer's standard	Special standard
6-30mm	±0.10mm	±0.08mm	±0.05mm	±0.02mm
31-40mm	±0.15mm	±0.15mm	±0.05mm	±0.03mm
41-50mm	±0.20mm	±0.20mm	±0.05mm	±0.03mm
51-60mm	±0.25mm	±0.25mm	±0.08mm	±0.03mm
61-65mm	±0.30mm	±0.30mm	±0.10mm	±0.05mm
Thick tolerance	±0.12mm	±0.10mm	±0.05mm	±0.03mm

Changzhou Raymond steel tube Co.,Ltd is located in Wujin District,Changzhou City,Jiangsu Province,China.Where is Yangtze River Delta Ecnomic Development Zone and nearby Shanghai City(one hour by high-speed train).The convenient transportation,developed commercial law enable it to be the first choice place for foreign friends all over the world to find business opportunities in China.

Our company was founded in 2002,with covering an area of more than 20000 Square meters,and more than 100 employees.Cold drawn and cold rolled precision seamless steel pipes and tubes are our main products,for which we have more than 10 years experience.Meanwhile we have specialized machining equipment,strong technical strength and advanced technology and so on.Our quality is ensured and we were certified to ISO 9001-2008 Certificate and got "Jiangsu quality credit AAA grade brand enterprise" title.

We are sincerely looking forward to cooperating with you!