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Address: Xinghong South Road, Phase II, Changhongling Industrial Park, Shishan Town, Nanhai District, Foshan City, Guangdong Province, China
Telephone：0757-85539263 ∕ 0757-85587339

Testing Center
Testing Center

Quality assurance is based on the perfect quality management system.
Zhanmei has gathered a number of professional elites who are engaged in product quality inspection and research and development. Our commitment is based on the product quality, with the business philosophy of "excellence and superior quality", to continuously improve the product quality and service, and lead Zhanmei to continuously grow and develop.
Zhanmei has the physical and chemical testing equipment valued more than 2 million Yuan, three Germany-imported spectral analyzers, sclerometer, tensile tester and chemical laboratories, as well as professional and experienced quality engineering and technical personnel, and rigorous work and professionalism, which provide the reliable quality assurance for the products of Zhanmei.

Ultrasonic flaw detector
Electronic universal testing machine
Electron microscope
2D scanner
Metallurgical polisher
Metallurgical microscope
Leica microscope
Laboratory
Laboratory
Vickers Hardness Tester
Jianmei R&D Center
Direct reading spectrometer

Shape	Basic size	Diameter tolerance			Tolerance of roundness (not greater than)			Bending degree (no greater than) (mm)	Length deviation(mm)
Shape	Basic size	polishing	Drawing	Extrusion	polishing	Drawing	Extrusion	Bending degree (no greater than) (mm)	Length deviation(mm)
Round bar	≥2-8	0-0.018	0-0.035	—	0.0025	0.005	—	1	±10
	>8-15	0-0.025	0-0.04	0-0.15	0.003	0.007	—	1	±10
	>15-25	—	0-0.07	0-0.18	—	0.010	—	1.5	±10
	>25-36	—	0-0.12	0-0.21	—	0.015	—	1.5	±10
hexagonal and special-shaped bars	≥4-8	—	0-0.03	0-0.15	—	0.005	—	1.5	±10
	>8-13	—	0-0.04	0-0.18	—	0.007	—	1.5	±10
	>13-21	—	0-0.07	0-0.18	—	0.010	—	3	±10
	>21-26	—	0-0.12	0-0.21	—	0.015	—	3	±10

Note: The enterprise standard of Zhanmei is in line with GB4425-84 standard, and its polishing and drawing accuracy can fully meet the processing needs of high-end imported CNC machines and automatic lathes, to develop the delivery tolerances and grade accuracy according to the actual needs of customers.

variety			Specifications	Japan		Main characteristics and Applications
name	grade	state	Specifications	grade	Code	Main characteristics and Applications
free cutting lead brass	Hpb59-2	drawing polishing	Φ2-35 S4-36 Φ3-35	C3604	C3604BDS	The superior cutting performance is available for bolts, nuts, small screws, shafts, gears, valves and components for watches, carburetors, IT industry and precision instruments. The GD high-precision hexagonal brass rod can be used for the imported high-precision CNC machine tools to process and produce the high-precision components.
cold riveting lead brass	Hpb63-3	drawing polishing	Φ3-35 S4-36 Φ3-35	C3560	C3560BDS	The superior cutting performance with excellent extension is available for the components that are subject to both cutting processing and cold riveting processing, and is mainly used for electrical switching components and enrichment valve piston of carburetor.
forged lead brass	Hpb59-1	drawing extrusion	Φ S5-36 Φ S8-36	3771	C3771BD C3771BE	The excellent hot forging performance and processing performance are available for air-conditioning valve, valve core, automotive valve and other complex high-precision parts, as well as high-grade plumbing equipment, case, strap, luxury hardware jewelry, locks, handles and so on.