Menu

Why Can We Always Ensure Excellent Quality

Quality Control

Inspection and Test Procedure
1. 100% PMI,Spectro Chemical Aanlysis Test for Raw Material
2. 100% Dimension & Visual Examination
3. Mechanical Properties Test Include Tension Test,Flaring Test (For Seamless tube/pipe fittings)/ Flange Test (For Welded Pipe & Tube fittings), Hardness Test ,Reversed Flattening Test
4. 100% Hydrostatic Test or 100% NON-DESTRUCTIVE Test (ET or UT)
5. Radiographic Test for Welded Pipe (shall be accordance with specification,or shall be as agreed upon between the purchaser and vendor)
6. Straightness Test (optional)
7. Roughness Test (optional)
8. Intergranular Corrosion Test(optional)
9. Impact Test (optional)
10. Grain Size Determinations (optional)
NOTES : ALL THE TESTS AND INSPECTION RESULT NEED TO BE SHOWED IN REPORTS ACCORDING TO STANDARD AND SPECIFICATION.

Products are sampled before and after production to conduct destruction experiments. Leave specimens for customers to confirm the quality.

WENZHOU ZHEHENG STEEL INDUSTRY CO;LTD

Mechanical properties test (tensile strength, yield strength, hardness test)

WENZHOU ZHEHENG STEEL INDUSTRY CO;LTD

Mechanical performance test (impact test)

WENZHOU ZHEHENG STEEL INDUSTRY CO;LTD

100% chemical analysis (PMI)

WENZHOU ZHEHENG STEEL INDUSTRY CO;LTD

Dimensional inspection.

WENZHOU ZHEHENG STEEL INDUSTRY CO;LTD

Flange surface roughness comparison.

WENZHOU ZHEHENG STEEL INDUSTRY CO;LTD

Packed in pallets or wooden boxes.

WENZHOU ZHEHENG STEEL INDUSTRY CO;LTD

After acceptance, it will be sent to the warehouse and ready for shipment.

WENZHOU ZHEHENG STEEL INDUSTRY CO;LTD

Certification

WENZHOU ZHEHENG STEEL INDUSTRY CO;LTD Certifications
Standard: PED1
WENZHOU ZHEHENG STEEL INDUSTRY CO;LTD Certifications
Standard: PED2
WENZHOU ZHEHENG STEEL INDUSTRY CO;LTD Certifications
Standard: Declaration certificate
WENZHOU ZHEHENG STEEL INDUSTRY CO;LTD Certifications
Standard: Inspection and quarantine record certificate
Issued By: China entry-exit inspection and quarantine bureau
WENZHOU ZHEHENG STEEL INDUSTRY CO;LTD Certifications
Standard: Foreign trade record registration certificate
Contact Supplier
Submit Requirement