Product Attributes
Manufacturing Method: Clarinet manufacturing methods (furnace brazing or welding) selected by the manufacturer. Galvanized by hot dip galvanizing method.
Thread and pipe joints:Galvanized steel pipe with threaded delivery, shall be galvanized screw system after the car. YB 822 thread should meet the requirements.
Mechanical properties: the mechanical properties of steel galvanized pre-GB 3092 should meet the requirements.
Uniformity of zinc coating for galvanized steel zinc coating should be uniform test. Steel specimens in copper sulfate solution dipping 5 times in a row may not turn red (copper color).
Cold bend test is not more than 50mm nominal diameter galvanized steel pipe should be cold-bending test. Bending angle is 90 °, bending radius of 8 times the diameter. Test with no filler, sample welds should be placed in the direction of the lateral or upper bend. After the test, the specimen should not have cracks and spalling of the same as the zinc coating.
Hydrostatic test pressure test should be conducted in the clarinet, eddy current inspection can also be used instead of hydraulic pressure test. Comparison of pressure or eddy current test sample size should be consistent with the provisions of GB 3092.
Uniformity of zinc coating: steel specimens in copper sulfate solution dipping 5 times in a row may not turn red (copper color)
Surface quality: galvanized steel galvanized surface should have a complete layer of or have not coated with dark spots and bubbles exist, allowing a little rough surface and the local presence of zinc tumors.
Zinc Coating Weight: According to the demand-side requirements, galvanized steel pipe can be used for determination of zinc coating weight, the average should be not less than 500g / square meter, of which not less than any sample 480g / square meter.
Related attributes of hot dip galvanized pipe:
- Standard:BS, JIS, GB, DIN, ASTM
- Standard:BS 1387, BS 4568, BS 31, GB/T3901, AS...
- Grade:Q195-Q345
- Thickness:2.0 - 15mm
- Section Shape:Round
- Outer Diameter:21.3 - 508 mm
- Place of Origin:tianjin China (Mainland)
- Secondary Or Not:Non-secondary
- Application:Structure Pipe
- Technique:Cold Rolled&hot rolled
- Certification:CE
- Surface Treatment:Galvanized
- Special Pipe:EMT Pipe
- Alloy Or Not:Non-alloy
- Product Name:hot dip Galvanized steel pipe
- Standard:GB,BS,ASTM
- Grade:Q215A,Q215B,Q235A,Q235
Detailed Description
Detailed introduction to hot dip galvanized pipe:
hot dip galvanized pipe
1)Size: 3/8-20inch .
2)Nominal wall thickness (mm):2.0 2.5 2.8 3.2 3.5 3.8 4.0 4.5
3)Coefficient parameter (c):1.064 1.051 1.045 1.040 1.036 1.034 1.032 1.028
4)Steel grade:Q215A Q215B Q235A Q235
5)Production steps
Round preparation - Heating - Hot perforation - the first cut - Pickling - grinding - Lubrication - cold rolling - fat - Solution heat - Straightening - Cutting - Pickling - Inspection.
6)Technical requirements
Grade and chemical composition of galvanized steel pipe galvanized steel grade and chemical composition should conform to GB 3092 under the clarinet and the chemical composition of steel grades.
8)Low pressure liquid delivery galvanized welded steel pipe