Alloy steel is often subdivided into two groups: high alloy steels and low alloy steels. The difference between the two is defined somewhat arbitrarily.
Alloy steel is steel that is alloyed with a variety of elements....

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Seamless tubes
Seamless Steel Pipe is made from a solid round steel ‘billet’ which is heated and pushed...
Alloy steel pipe applies to petroleum, chemical industry, electric power, boiler, high temperature resistant, low temperature resistant, corrosion resistant steamless steel pipe used.
SunnySteel is a merchant exporter and supplier of alloy steel pipes and alloy steel tubes used for many different purposes.
Seamless pipes
Stainless Pipes and tubes
Seamless pipes
Special Alloy, Specialist Steel, High-Performance Alloys
Seamless tubes
Welded pipe including ERW, EFW and DSAW carbon steel pipe along with their respective flanges and fittings.
SSAW pipe is made of hot rolled coiled steel by automatic submerged arc weld under normal atmospheric temperature.
SSAW pipe is made of hot rolled coiled steel by automatic submerged arc weld under normal atmospheric temperature.
Seamless tubes
Pipe fittings are used to connect pipes. There are different varieties of pipe fittings made of various ...
Seamless tubes
We produce weldable components include elbows, tees, reducer.
Seamless tubes
A flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system.
Forged Steel High-Pressure Fittings
Forged Steel High-Pressure Fittings
Forged Steel High-Pressure Fittings
Sunny Steel specializes in sccessories and we can offer a complete range of sizes, materials, standards, and grades.
ASTM A335 >>
ASTM A335 Pipe Specifications, Seamless Ferritic Alloy Steel Pipe for High-Temperature Service
ASTM A333 >>
ASTM A333 is the Standard Specification for Seamless and Welded Steel Pipe for Low-Temperature Service.
ASTM A213 >>
ASTM A213M-09 Standard Specication for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, Heat-Exchanger Tubes.

Product Detail
UOE (Uing and Oing forming) Pipes
UOE mill adopts Uing and Oing forming, the formed pipes are welded inside by five internal welding stations with three wires for each weld,and welded outside by four external welding stations with three wires for each weld. According to different customers’ requirements, the welded pipe can be expanded by mechanical or hydrostatic expander to enhance the dimension accuracy, and eliminate the residual stress.
       
Specifications:
The mill has been equipped with Baldwin Southwork Co,Ltd.’s edge milling, Mannesmann and Mckay Co.,Ltd.’s crimping press, VERSON company’s U-ing press, O-ing press and hydrostatic testing and expanding machine, American Lincoln Company’s modern welding equipment including tab welding, internal welding and external welding.The whole manufacturing process is controlled by computer and PLC.

The UOE mill is the best suitable process to meet customers’ requirements by virture of the characteristic of high production efficiency, stable product quality and various accessories for manufacturing and inspection.


Standards:
UOE/LSAW pipes-- for the transportation of oil, natural gas and chemical materials
Ouality Standards : API、BS、ASTM 、JIS、DIN、GB 、ISO、DNV
Grades : GB/T9711 L190-L555 (API 5CT,API 5L A-X80)

Specifications:
Outside Diameter : Φ219-Φ2520mm (8"-48")
Wall Thickness : 6.4-25.4mm (1/4"-1")
Length : 9-12.2m (30’-40’)

Manufacturing Process:
UOE Pipe Manufacturing Process

We are able to provide customers with quality products and perfect service.

If you want to know more information, please kind to visit our website.

Tel.:+8621-3378 0199 Fax:+8621 5107 9722 MSN Online Consultation
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