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ZHEJIANG DOUBLE-LIN VALVES CO.,LTD. Quality Control

All Products

Brass Ball Valves (88)

Brass Gas Valves (48)

Brass Angle Valves (8)

Brass Gate Valves (12)

Brass Spring Check Valves (10)

Brass Threaded Fittings (49)

Brass Bibcocks (24)

Stainless Steel Braided Hose (13)

Stopcock Tap (26)

Brass Manifolds (57)

Thermostatic Radiator Valves (19)

Lockshield Valves (3)

Brass Swing Check Valves (12)

Brass Compression Fittings (9)

Brass Press Fittings (11)

Floor Drainer (22)

Pex Pipe Fittings (7)

HVAC Valve (5)

Pipe Fitting Tools (8)

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Certification

QC Profile

DOUBLE-LIN products quality are well controlled from raw material inspection, production inspection, accessories inspection, to finished products inspection. Strict quality inspections are conducted throughout the production process from beginning to the end.

Large proportion of the products are approved with international certificates such as CE, AGA, Watermark, ACS, EAC,DVGW, EN331 and WRAS

Certification