What are the inspection items for industrial seamless steel pipes

What are the inspection items for seamless steel pipes? First of all, seamless steel pipes are made by perforating a whole round of steel. There is no weld on the surface of the steel pipe, which is called a seamless steel pipe. According to the production method, seamless steel pipes can be divided into hot-rolled seamless steel pipes, hot-expanded seamless steel pipes, cold-rolled seamless steel pipes, cold-drawn seamless steel pipes, extruded seamless steel pipes, jacking pipes, etc.

First, seamless steel pipe inspection items:

① Chemical analysis: composition detection, material detection, brand identification, spectrum detection, ROHS detection, REACH detection, Chinese and English MSDS, surface composition analysis, etc.

②Physical properties: magnetic properties, electrical properties, thermal properties, oxidation resistance, wear resistance, salt spray, corrosion, density, thermal expansion coefficient, elastic modulus, hardness;

③Chemical properties: atmospheric corrosion, intergranular corrosion, stress corrosion, pitting, corrosion fatigue, artificial atmosphere corrosion;

④Mechanical properties: tension, bending, yielding, fatigue, torsion, stress, stress relaxation, impact, wear, hardness, hydraulic resistance, tensile creep, flaring, flattening, compression, shear strength, etc.;

⑤Process performance: filament stretching, fracture inspection, repeated bending, bidirectional torsion, hydraulic test, flaring, bending, curling, flattening, ring expansion, ring stretching, microstructure, metallographic analysis;

⑥Nondestructive testing: X-ray nondestructive testing, electromagnetic ultrasonic, ultrasonic, eddy current testing, magnetic flux leakage testing, Penetrant testing, magnetic particle testing failure analysis: fracture analysis, corrosion analysis, etc.;

⑦ Metallographic inspection: macroscopic metallography, microscopic metallography;

Second, seamless steel pipe inspection standards:

API Spec 5CT "Casing and oil pipe", API Spec 5L "Pipeline steel pipe", GB5310 "Seamless steel pipe for high-pressure boiler", GB9948 "Seamless steel pipe for petroleum cracking", GB6479 "Seamless steel pipe for high-pressure fertilizer equipment", GB3087 "Seamless steel pipe for low and medium pressure boilers", GB18248 "Seamless steel pipe for gas cylinders", GB/T8163 "Seamless steel pipe for conveying fluids", GB/T18984 "Seamless steel pipe for low-temperature pipelines" GB/T28884 "Seamless steel pipe for large volume gas cylinders" GB/T9711 "Steel pipes for pipeline transportation systems in the petroleum and natural gas industry", ASME SA53 "Uncoated and hot-dip galvanized welded and seamless steel pipes" ASTM A53/A53M "Uncoated and hot-dip galvanized welded and seamless steel pipes", ASME SA-106/SA-106M "Carbon steel seamless steel pipes for high temperature", ASTM A106/A106M "Carbon steel seamless steel pipes for high temperature", ASME SA-210/SA210M "Medium carbon steel seamless steel pipes for boilers and superheaters", ASTM A210/210M "Medium carbon steel seamless steel pipes for boilers and superheaters", ASME SA-213/SA-213M "Ferritic and austenitic alloy steel seamless steel pipes for boilers, superheaters and heat exchangers", ASTM A213/A213M "Ferritic and austenitic alloy steel seamless steel pipes for boilers, superheaters and heat exchangers", ASME SA-333/SA-333 "Seamless and welded steel pipes for low temperature service and other purposes with notch toughness requirements", ASTM A333/A333M "Specification for seamless and welded steel pipes for low temperature service and other purposes with notch toughness requirements", ASME SA-335/SA335M "Ferritic alloy seamless steel pipes for high temperature service", ASTM A335/A335M "Ferritic alloy seamless steel pipes for high temperature service", BS EN10216 "Delivery conditions for seamless steel pipes for pressure service Part 2 Non-alloy and alloy steel pipes with specified high temperature properties" And more standards

Third, seamless steel pipe testing:

Our urban construction is inseparable from seamless steel pipes, such as groundwater pipelines, natural gas pipelines, oil pipelines, etc. Seamless steel pipes are light in weight, resistant to high temperatures, and impact-resistant. They are indispensable materials for urban construction and pipeline transportation. However, there are many types of seamless steel pipes, and there are great differences in hardness and other properties. However, the price of seamless steel pipes is slightly higher, which directly affects the construction cost. For long-term development, we continue to conduct seamless steel pipe testing, to improve technology and reduce costs. So do you know what the seamless steel pipe testing range is and what are the testing items? Interested friends continue to read on.

① Seamless steel pipe testing range: tunnel seamless steel pipe, galvanized seamless steel pipe, cold-drawn seamless steel pipe, stainless steel seamless steel pipe, hot-rolled seamless steel pipe, alloy seamless steel pipe, hot-rolled seamless steel pipe, large-diameter wall thickness seamless steel pipe, continuous rolling seamless steel pipe, etc.

② Seamless steel pipe inspection items: ultrasonic testing, non-destructive testing, weld testing, elongation, pressure testing, raw material testing, galvanized layer testing, eddy current testing, mechanical properties, magnetic particle testing, yield strength, material testing, hardness testing, corrosion resistance, metallographic analysis, etc.