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LSAW produce Technology Center

LSAW (Longitudinally Submerged Arc Welded Steel pipes) in leaflets plate as raw material, the steel plate in the mold or molding machine pressure (volume) into using double-sided submerged arc welding and flaring from production.

As a superior technology center has been establish ed including the domestic first-class chenical laboratory,mechanics laboratory, the metallography test laboratory and welding laboratory with advanced equipments for inspection and test Accordingly,it can provide a comprehensive inspection for the raw material and the finished products so that it guaran test the high quality of products.

Chemical laboratory

Mechanics Laboratory

Pendulum in pact test machine

1. The tensile test is to test the metal’s tensile strength, yield strength, elongation and reduction of cross sectional area in order to assess the strength and plasticity of welding seam or welded joint.

2. The bend tests include horizontal bend test, axial bend test, face bend test, root bend test and side bend test which are mainly used to test the plasticity of welded joint.

3. The impact test is used to test the toughness and notch sensibility of weld metal and welded joint.

4. The hardness test can be used to test the Rockwell hardness, Brinell hardness and Vickers-hardness of welded joint, as well as test the hardening tendency of welded joint. It can also be used to indirectly test the embrittlement degree of welded joint.

5. The fatigue test is used to test the fatigue strength of weld metal and welded joint as well as the fatigue crack growth rate of welded joint.

Metallographic Test Laboratory
Metallographic Test Laboratory
It is used to qualitatively or quantitatively analyze the organizational and structural characteristics of joint.
View LSAW pipes list
Welding Laboratory

Submerged arc weld machine
with double welding wire &arcs

Portable automatic gas
cutting machine

Carbon dioxide protection
weld machine

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.
Specifications
Throughput: 400,000 MT
Outside Diameter : Φ508-Φ1118mm (20"-44")
Wall Thickness : 6.4-25.4mm (1/4"-1")
Ouality Standards : API, BS, ASTM , JIS, DIN, GB , ISO, DNV
Length : 9-12.2m (30'-40')
Grades : GB/T9711 L190-L555 (API 5L A-X80)
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.
Manufacturing Process:


About Sunny Steel

Our team are highly trained and experienced in servicing and producing all types of steel supplies. Whether you've got a large construction project, or need parts for industrial machinery, our team of steel fabrication consultants will ensure that your project is provided with the parts you need, when you need them.

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