Hot-selling Bright Annealed Seamless Stainless Duplex Steel Tube - High pressure seamless bolier tubes – Donghao Metal Group

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During the past few years, our business absorbed and digested state-of-the-art technologies the two at home and abroad. Meanwhile, our firm staffs a group of experts devoted to your development of 304 316 316l 904l Stainless Steel Tube , Straight Tube , Straight Tubing , We have now designed a reputable track record among many shoppers. Quality&customer initially are normally our constant pursuit. We spare no attempts to produce greater solutions. Stay up for long-term cooperation and mutual positive aspects!

Hot-selling Bright Annealed Seamless Stainless Duplex Steel Tube - High pressure seamless bolier tubes – Donghao Metal Group Detail:

Seamless Boiler Tubes in an extensive range of stainless steel and alloy steel, suitable for boilers, such as high pressure boilers, steam HRSG boilers, high pressure feed water heaters, super heaters.

DMG’s seamless boiler tube program includes High pressure boiler tubes and Super length boiler tubes, our boiler tubes are supplied in straight lengths up to 28 meters, or as U-bent tubes.

Main Material:

T1, T2 , T11 , T12 , T22 , T23 , T91 , T92

Other grades can be offered on request.

Standards: ASME SA213M EN 10216-2

Outside diameter range from 6.35-50.8mm

Wall thickness range from 0.71-3.81mm

Inspection & Test：

1. 100% PMI / Chemical analysis tests.

2.100% Dimension tests & 100% Visual examination

3. Tension test, flange test, hardness test, flattening test

4. 100% Eddy Test or Hydrostatic Test before bending and 100% Hydrostatic test after bending

5. Checking stress released heat treatment in bending area plus 300mm straight leg length after bending with agreement with clients.

Notes: all the tests and inspection need to provide with reports according to standard and test results.

U-BENDING / U bend Tubing / U Tube:

U-BENDING / U bend Tubing

Bending Radius: From 1.5 * O.D (outside diameter) ,When ordering tubes with bending radius less than 1.5*OD, it is necessary to get the agreement with us.

Straight tubes maximum length (before bending): 35000 mm.

Leg length: min 1 meter, max. 16500 mm (for max r=1500mm)

Note: Other sizes are available upon agreement.

Heat treatment: stress relieved after u-bending (bending area plus 300mm for each leg).

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Persisting in "High high quality, Prompt Delivery, Aggressive Price", we've established long-term cooperation with clients from the two overseas and domestically and get new and old clients' superior comments for Hot-selling Bright Annealed Seamless Stainless Duplex Steel Tube - High pressure seamless bolier tubes – Donghao Metal Group, The product will supply to all over the world, such as: Canada , St. Petersburg , Boston , We maintain long-term efforts and self-criticism, which helps us and improvement constantly. We strive to improve customer efficiency to save costs for customers. We do our best to improve the quality of product. We will not live up to the historic opportunity of the times.

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Product variety is complete, good quality and inexpensive, the delivery is fast and transport is security, very good, we are happy to cooperate with a reputable company!