boiler steel pipe

Steel pipe can be classified to seamless steel pipe and welded steel pipe. According to cross section shape, it is also divided into round pipe with wide applications and section pipe such as some square, rectangular, arch, hexagon, equilateral triangle, octangle etc. Steel pipe under pressure are both do hydraulic experiment to test the compression ability and quality. Under the specified pressure, steel pipe doesn’t appear leakage, soak and expansion, which is qualified. Some steel pipes depending on standard or customers’ request need to do flange test, flaring test and flattening test etc.

Boiler Steel Pipe



Process Method:
1. The operating temperature of general boiler pipe is below 350℃, domestic pipe mainly uses 10# and 20# carbon steel hot rolling or cold drawn tube to manufacture.
2. High pressure boiler pipe is often used under high temperature and high pressure. And under the high temperature gas and steam, boiler pipe is easy to be oxidation and corrosion. Therefore, boiler pipe needs to have high rupture strength, high oxidation corrosion resistance and good organizational stability.

Usages:
1. General boiler pipe is mainly used to manufacture water wall tube, boiling water tube, super heated steam tube of locomotive boiler, small or big fire tube and arch tube.

2. High pressure boiler pipe is chiefly applied to produce superheater tube, reheater tube, gas-guide tube and steam pipe of high pressure and super high pressure boiler. The trend of high pressure boiler pipe business supply is stable totally; however, the specific industry supply and demand will be further differentiation. The insiders point that the key link is the application and promotion of new energy-saving 20g high pressure boiler pipe.

New energy-saving 20g high pressure boiler pipe is getting more and more popular increasingly like green environmental protection painting, energy saving and water-saving bathroom products, environmental protection stone material, environmental protection cement foam insulation board etc. Energy saving environmental protection products is promising in broad and prospect market of 20g high pressure boiler pipe.

Detailed Description About Boiler Steel Pipe

Grades	ASTM A192, ASTM A210, GB/T5310, BS3059, DIN1629
Materials	ASTM A178 Grade A, C, D ASTM A192 ASTM A210 Grade A-1, C BS3059-320 CFS BS3059-360, 440, 243, 620-460,622-490, S1, S2, TC1, TC2 EN10216-1 P195TR1/TR2, P235TR1/TR2, P266TR1/TR2 EN10216-2 P195GH, P235GH, P265GH, TC1, TC2 DIN17175 ST35.8 ST45.8 DIN1629 ST37.0, ST44.0 ST50.0 JIS G3454 STPG370, STPG410 JIS G3461 STB340, STB410, STB440 GB5310 20G, 15MoG, 12CrMoG, 12Cr2MoG, 15CrMoG, 12Cr1MoVG GB9948 10,20, 12CrMo, 15CMo GB3087 10,20
OD	48MM--711MM
Wall Thickness	2.5MM--50MM
Origin	China
Types	Seamless Steel Pipe
Applications	Boiler Pipe
Surface	Annealing, manual polishing and mechanical polishing
Special tube	Conventional wall thickness and special wall thickness steel tube, max wall thickness 50mm
Usages	Mechanical structure, hydraulic tubing, pneumatic linear actuator
Processing	Hot rolling and heat expands
Length	According to customers’ requirements
Specification	89--508*4--30
Testing/inspection	Chemical compositions, tensile properties (tensile strength, yield strength or yield and elongation) surface and size test, NDT, hydrostatic test
Surface treatment	Immersion oil, painting, passivation, phosphating, blasting
Materials	Carbon steel
FOB price	competitive
Port	Tianjin/Shanghai/Qingdao
Payment	L/C，T/T
Min order quantity	5T or Mutual negotiation
Supply ability	5000T per month
Normal Packing	Baling packing, bulk or according to customers’ needs
Delivery Term	7days-15days or according to customers requirements
Delivery State	Paint black paint, groove, pipe cap, resist compression, resistant corrosion

Allowed Tolerance		Wall Thickness Tolerance
D ﹤ 50	±0.05mm	S ﹤ 4mm	±12.5%
D ﹥ 50	±1%	4--20mm	+15/-12.5%
		S≧20mm	±12.5%