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ypes of inspections for seamless steel tubes, and which items are key inspection points.

Category:Industry News      Author:XinYe Steeel Pipe      Publish Date:26-06-16

Inspection of Seamless Steel Pipes

1. Hot-Rolled Seamless Steel Pipe Inspection

Covers inspection of hot-rolled seamless steel pipes including medium & low pressure boiler tubes, general-purpose performance tubes, high-pressure boiler tubes, stainless steel tubes, alloy steel tubes, geological drilling tubes, and petroleum cracking tubes.

2. Cold-Rolled Seamless Steel Pipe Inspection

Covers various alloy cold-rolled seamless steel pipes for inspection, such as seamless tubes for general structures & mechanical structures, high-pressure boiler seamless tubes, low-pressure boiler seamless tubes, cold-drawn/cold-finished precision seamless tubes, fluid transmission seamless tubes, geological drilling seamless tubes, chemical fertilizer service seamless tubes, precision inner-diameter seamless tubes for hydraulic cylinders, petroleum cracking tubes, and marine seamless tubes.

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3. Round Seamless Steel Pipe Inspection

Covers inspection of petroleum geological drilling tubes, petrochemical cracking tubes, bearing tubes, as well as high-precision structural steel tubes for automobiles, boilers, aviation and tractors.

4. Stainless Seamless Steel Pipe Inspection

Covers hot-rolled stainless steel tubes, semi-ferritic semi-martensitic stainless steel tubes, hot-extruded stainless steel tubes, cold-drawn/cold-rolled stainless steel tubes, martensitic stainless steel tubes, austenitic stainless steel tubes, and austenitic-ferritic duplex stainless steel tubes.

5. Pipe Jacking Seamless Pipe Inspection

Pipe jacking inspection covers air pressure balance, slurry balance and earth pressure balance detection.

6. Special-Shaped Seamless Steel Pipe Inspection

Covers seamless steel pipes of special cross-sections including square, triangular, elliptical, hexagonal, melon-shaped, finned and star-shaped tubes.

7. Thick-Wall Seamless Steel Pipe Testing

Covers testing of hot-rolled thick-wall seamless pipes, cold-rolled thick-wall seamless pipes, cold-drawn thick-wall seamless pipes, and stainless steel seamless pipes for pipe jacking structures.

8. General Seamless Steel Pipe Inspection

Covers general steel tubes, medium & low pressure boiler tubes, high-pressure boiler tubes, alloy steel tubes, stainless steel tubes, petroleum cracking tubes, geological drilling tubes, etc.

Inspection Items for Seamless Steel Pipes

1. Chemical Property Testing

High temperature resistance, low temperature resistance, acid resistance, alkali resistance, oxidation resistance, etc.

2. Technological Performance Tests

Wire tensile test, reverse torsion test, fracture inspection, flaring test, repeated bending test, reverse bending test, reverse flattening test, hydraulic pressure test, bending test, flattening test, crimping test, ring expanding test, cupping test, metallographic examination, metallographic analysis, etc.

3. Non-Destructive Testing (NDT)

X-ray non-destructive testing, electromagnetic ultrasonic testing, ultrasonic testing, eddy current testing, magnetic flux leakage testing, magnetic permeability testing, magnetic particle testing.

4. Mechanical Property Testing

Tensile strength, impact test, yield strength, percentage elongation after fracture, reduction of area, hardness values (Rockwell hardness, Brinell hardness, Vickers hardness, Leeb hardness).

5. Other Test Items

Metallographic structure, inclusions, decarburized layer, microstructural content measurement, corrosion cause analysis, grain size & microstructure grading, macrostructure inspection, intergranular corrosion, microstructure of high-temperature alloys, high-temperature metallographic structure, etc.

Follow Huike Steel Pipe for more information about seamless steel pipes.