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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Heat Exchanger Boiler Steel Tubes Cold Drawn Up To 24m Length

Heat Exchanger Boiler Steel Tubes Cold Drawn Up To 24m Length

Heat Exchanger Boiler Steel Tubes Cold Drawn Up To 24m Length

Product Details:

Place of Origin: China
Brand Name: HENGLONG
Certification: ISO9001, OHSAS18001, ISO14001, PED97/23/EC

Payment & Shipping Terms:

Price: Negoniation
Packaging Details: Wooden cases
Delivery Time: 20-30 days
Payment Terms: L/C, T/T
Supply Ability: 6000 metric tons per year
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Detailed Product Description
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

  • One tension test shall be made on a specimen for lots of not more than 50 tubes. Tension tests shall be made on specimens from two tubes for lots of more than 50 tubes
  • One flattening test shall be made on specimens from each end of one finished tube, not the one used for the flaring test, from each lot.
  • One flaring test shall be made on specimens from each end of one finished tube, not the one used for the flattening test, from each lot.
  • Each tube shall be subjected to the hydrostatic test, or, instead of this test, a nondestructive electric test may be used when specified by the client.

 

Surface quality

  • Cold drawn steel tubes shall be free of scale and suitable for inspection. A slight amount of oxidation is not considered scale.
  • Any special finish requirement shall be subject to agreement between the supplier and the purchaser.

 

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

 

Heat Exchanger Boiler Steel Tubes Cold Drawn Up To 24m Length
Heat Exchanger Boiler Steel Tubes Cold Drawn Up To 24m Length

Heat Exchanger Boiler Steel Tubes Cold Drawn Up To 24m Length

 

Heat Exchanger Boiler Steel Tubes Cold Drawn Up To 24m Length

 

 

 

 

Contact Details
Zhangjiagang Bonded Area Henglong Steel Tube Co., Ltd.

Contact Person: Yaxin

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