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Strict quality assurance system is being followed in all our departments and Total Qulaity Management is applied to streamline and all the procedures and practices in operation to achieve high standard of efficiency. Continuous efforts are being made for improvement of materials technology and equipments to give best quality products at the most affordable prices.

The quality assurance dept oversees all important quality functions and performs the following activities :

1) The system controls the quality of all incoming materials as per the raw material test certificate of the material. Randomly checking in each size for chemical and physical properties at Government approved laboratory.

2) During forming pressing forging and heat treatment process control system outlines inprocess checks and controls to be followed during heat treatment and testing.

3) Suitables fixtures and templates are used to maintain dimensional accuracy necessary guages and callipers are calibrated periodically to maintain their acuuracy.

4) Fittings are supplied with test certificate as per approved QAP. Test certificates incorporate chemical composition, mechanical properties hardness detail of heat treatment Ultrasonic test ,Radiography test and stamping details.

QUALITY CONTROL yaang.com               

Metallographic Testing Hardness Testing Mechanical Property Chemical Analysis
Metallographic Testing
Hardness Testing
Mechanical Property
Chemical Analysis

Process Control

A: Self-inspection & Intercross Check
B: Pre-inspection for semi-finished Pipes
C: Mechanical Test after heat treatment

D: Auto Controlled Heat Treatment Furnace-stable & Pollution-prevented

Inspection for Finished Products
A: Dimension Measurement
B: Outer & Inner Surface Inspection
C: Chemical Composition: Chemical Analysis; Portable Spectrometer
D: Mechanical Properties: Flattening, Flaring, Hardness; Tensile Strength
E: Non-destructive Test: Eddy Current Test; Ultrasonic Testing;
F: Corrosion Test: Intergranular Corrosion Test; Pit Corrosion Test
G: Hydrostatic Test

H: Grain Size Test

Environment Protection
During the factory's design and construction, we considered the environment protection.
Choose more gas as fuel for all burning, less coal.

Green Energy

Sewage Treatment

Yaang Pipe Industry Co., Limited has conformable and integral quality control system and got approval or certificates of ISO9001, PED/97/23/EC and so on....

When you need to purchase special stainless steel products, not only can provide up-with the ISO9001 international quality standards, but also through our professional metallurgical technology to help you make the right choice.Produced by the company’s products are widely used in business paper, shipbuilding, oil, chemicals, power, bio-engineering, natural gas, sewage, construction, medicine, food (dairy) industry.Best-selling product of the Netherlands, Belgium, Germany, Finland, Italy, the United States, Singapore, Spain, Malaysia and the Middle East and other international markets, and has achieved good market share and customer satisfaction.

Tel No:+86-18267732328 / Fax No :86-0577-56809281 / Email:sales@yaang.com
Address:Longwan District, Wenzhou, Zhejiang Province, China.

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