ASTM A213 T5/T9/T11/T12 ASTM A355 P5 P9 P11 P12 P22 P91 SMLS alloy steel welding welded studded pipes tubes stud tubes

Manufacturing process:

Studs are fully automatically welded onto the tube by resistance welding.

Acceptance criteria

Approved drawings and the delivery conditions (TDC) of clients.

Delivery condition

Tube ends are square cut, free burrs, internally dried and air blown clean, externally coated with varnish at both ends of extruded bimetallic fin tube.

Surface Protection:

Oil dip, black coating or varnish.

Type of Studs

Cylindrical or elliptical

Documentation

It shall include raw materials mill certificates, inspection and test samples results and warranty certificate of manufacturer.

Applications:

1. Furnace
2. Chemical
3. Petrochemical industry
4. Power station etc.

Specifications:

Dimensions Data Sheet We are Supplying.

Competitive Advantage:

1. We have more than 10,000 square meters workshop, including 3 finning machines, daily extrusion capacity up to 80,000 studs.
2. Shanghai Port is our nearest seaport and airport, less than 2 hours’ drive away from our workshop, convenient transportation.
3. Due to their high rigidity, studded tubes can be used even under extreme temperature and pressure conditions.