Donghao Metal supply high quality Alloy Steel Tubes with wide range of material.
Those material can be used for kinds of Boilers, Shell & Tube Heat Exchanger, Cooler, Condenser, Heater and Reheater, Water Wall, Economizer.
Tube can be Straight and Bending.

Tubes for  Middle-High Pressure Boiler and Heat Exchanger:

Specification

Material List
ASME SA179, ASME SA192 , ASME SA209 T1
ASME SA210, Gr.A1, Gr.C
ASME SA213, T2, T5, T9, T11, T12, T22, T23, T91, T92

Size Range: O.D 16mm- 219mm, W.T 2.0mm - 40mm

HRSG ( Heat Recover Steam Generator ) Tubes
Length Range: 16-26 meter per pc, Max 28M for special order

Material List
SA210 A1, SA210 Gr.C, SA192
SA213- T11, T12, T22, T91, T92
20G, 15CrMoG, 12Cr1MoVG, P235GH, 13CrMo4-5

U Bending Tube
Radius: 20mm - 1200mm
Bending Degree: 120 - 180

Acc to ASTM A556 or customer's request

Test
100% Eddy Test or Hydrostatic Test, UT Test, ASTM A262.E,  NACE MR.01.75/77

Heat Treatment
Acc to related Spec & Standard,  Stress Releas on U Bend part is avaliable

Alloy Steel Tubes for Low Tempreture Application
Spec: ASTM A333, ASTM A334, API SPEC 5CT:
Material: Grade 1, Grade 4, Grade 6, Grade 7, Grade 8, Grade 9, Grade 10, N80, L80-1, P110
Size Range: O.D 16mm-219.1mm, W.T 2.0mm-40mm

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