basic introduction

ZRLK testing integrates domestic testing resources, for profiles, steel pipes, plates, stainless steel, structural steel, etc., around steel performance indicators, based on various testing standards, provides exclusive solutions to allow you to get authoritative reports faster and better Address your needs.

Testing service

Steel profile testing

Angle trough, H-shaped steel, square steel, flat steel, ball flat steel, T-shaped steel, etc.

Steel plate inspection

Cold, hot rolled plate/coil, plate, color coated plate (galvanized plate, color coated plate, tin plate, aluminum zinc plated steel plate), silicon steel, strip steel, etc.

Steel pipe inspection

Seamless steel pipes, welded steel pipes, special steel pipes, etc.

Steel structure, engineering steel testing

Rebar, wire, coiled screw, round bar, steel structure, angle steel, steel bar, etc.

Steel product testing

Silicon steel sheet, steel wire rope, steel wire, steel bar, steel billet, steel ingot, steel mesh, etc.

Stainless steel testing

Stainless steel plates, stainless steel containers, stainless steel rods, stainless steel tubes, stainless steel kitchen utensils, food grade stainless steel, stainless steel cabinets, stainless steel tube building materials, 316 stainless steel, 302 stainless steel, 304 stainless steel, 304L stainless steel, 316L stainless steel, 431 stainless steel, 304F stainless steel, etc.

Test items

Common detection of a chemical composition: analysis of C, S, P, Mn, Si, Cr, Ni element content;

Common analysis-spectral analysis: photoelectric colorimetric analysis; polarographic analysis; electron probe X-ray microscopic analysis

Macro inspection: determination of the structure and macro defects of killed steel, continuous cast steel, boiling steel, acid immersion test, tower hairline acid immersion test, sulfur print test, fracture inspection, etc.;

Metallographic examination: metallographic microscope to detect the depth of decarburization layer (GB/T224-1987), grain size detection, detection of non-metallic inclusions in steel, segregation detection of chemical composition in steel, etc.;

Process performance: hardenability test, welding performance test, cutting performance test, wear test, metal bending test, metal repeated bending test, metal wire repeated bending test, metal wire torsion test, metal wire winding test, metal item breaking test, metal Cupping test, etc.;

Physical performance: Experimental testing of physical performance indexes in the performance inspection of metal plastic processing products. The main inspection items are magnetic performance, density, elastic modulus, thermal expansion coefficient, resistance value, etc.

Electrical properties: magnetic properties measurement, density measurement, elastic modulus measurement, expansion coefficient measurement, resistivity measurement, etc.;

Chemical properties: intergranular corrosion test, anti-oxidation performance test, atmospheric corrosion test, full immersion, inter-immersion corrosion test, etc.;

Non-destructive testing: ultrasonic flaw detection, magnetic flaw detection, ray flaw detection, specification and size detection, surface defect detection, etc.;

Hardness: Brinell hardness, Rockwell hardness, Vickers hardness, micro hardness, Shore hardness, etc.;

Tensile: Hardness index (specified non-proportional elongation stress, specified total elongation stress, specified residual elongation stress, yield point, tensile strength), plasticity index (elongation; section expansion rate), high temperature creep test ( Creep speed, endurance strength limit, endurance elongation after break, endurance shrinkage rate), etc.;

Impact: High and low temperature impact test, multiple impact tests, etc.

Testing standards

Our advantage

1. With a professional qualification and experienced expert technical team, we can provide you with professional consultation and services.

2. Have advanced laboratory equipment to ensure the accuracy and reliability of test data.

3. As a third-party testing and certification organization trusted by customers worldwide, we are your certificate of quality.