Zhangjiagang Bonded Area Yaxin Precision Tube Co., Ltd.
Zhangjiagang Bonded Area Henglong Steel Tube Co., Ltd.
Steel Tubing for Automotive Powertrain, Shock Aborber, Steering
And Steel Tubing for Heat Exchanger, Superheater, Reheater, Boiler, Mechanical
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| Place of Origin: | China |
| Brand Name: | HENGLONG |
| Certification: | ISO9001, ISO18001, ISO14001, PED97/23/EC |
| Price: | Negoniation |
|---|---|
| Packaging Details: | Wooden cases |
| Delivery Time: | 20-30 days |
| Payment Terms: | L/C, T/T |
| Supply Ability: | 6000 metric tons per year |
| Material: | Alloy Steel | Type: | Seamless Steel Tube |
|---|---|---|---|
| Process: | Cold Drawn | Tube Shape: | Round |
| Application: | Boiler, Superheater, Heat Exchanger |
ASME SA213 Seamless alloy steel boiler, superheater, and heat exchanger tubes
Standard: ASTM A213 / ASME SA213
Steel grade: ferritic alloy steels
Material shall conform to the applicable requirements of specification A450/A450M
| T5 | T11 | T22 | T23 | T91 | |
| Carbon, max, % | 0.15 | 0.05-0.15 | 0.05-0.15 | 0.04-0.10 | 0.08-0.12 |
| Manganese, % | 0.30-0.60 | 0.30-0.60 | 0.30-0.60 | 0.1-0.6 | 0.30-0.60 |
| Phosphorous, max. % | 0.025 | 0.025 | 0.025 | 0.03 | 0.02 |
| Sulfur, max, % | 0.025 | 0.025 | 0.025 | 0.01 | 0.01 |
| Silicon, max, % | 0.50 | 0.50-1.00 | 0.50 | 0.50 | 0.2-0.5 |
| Chromium, max, % | 4.0-6.0 | 1.00-1.50 | 1.90-2.60 | 1.9-2.6 | 8.0-9.5 |
| Molybdenum, % | 0.45-0.65 | 0.44-0.65 | 0.87-1.13 | 0.05-0.30 | 0.85-1.05 |
| Vanadium, min, % | - | - | - | - | 0.18-0.25 |
Process: cold drawn
The tubes cover minimum wall thickness.
Application: tubular heat exchangers, superheaters, boilers.
Dimensional range:
OD: 12.7-76.2mm
Length: up to 24m
Any specific size is to be discussed before offer
The tube be 100% eddy current tested
Ultrasonic test is as option
Straightness ≤1mm/1000mm
Roughness: Ra ≤0.8
Heat treatment
All tubes of grades, except T23, T91 shall be reheated and furnished in the full-annealed, normalized and tempered condition.
Mechanical properties
| T5 | T11 | T22 | T23 | T91 | |
|
Tensile strength min, ksi (MPa) |
60 (415) | 60 (415) | 60 (415) | 74 (510) | 85 (585) |
|
Yield strength min, ksi (MPa) |
30 (205) | 30 (205) | 30 (205) | 58 (400) | 60 (415) |
|
Elongation in 50mm min, % |
30 | 30 | 30 | 20 | 20 |
Hardness
T9 shall have a hardness not exceeding 179HB or 89HRB
Grade T91, T92 shall have a hardness not exceeding 250HB or 25HRC
Grade T23 shall have a hardness not exceeding 220HB or 97HRB
Grade T5, T9, T11, T22 shall have a hardness not exceeding 163HB or 85HRB.
Test
Surface quality
Tubes shall be delivered with square cut ends. The ends are free of excessive burrs.
The tubes are bundled in the waterproof plastic sheet and packed in the wooden cases
The case is most suitable for hanging by forklift.
EN10204-3.1 MTC shall be issued
EN10204-3.2 MTC is as option
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