1.Production Specification:
Product | Material | Advantage | Size |
Regular Thickness (mm) |
Colour | Surface Treatment |
Perforated panel Perforated ceiling  Acoustic ceiling  |
Aluminum alloy | Sound insulation effect | According to your request | 0.6mm-3.0mm,etc. | RAL K7/ Pantone color chart |
Powder coating PVDF Heat transfer |
2.Perforation Pattern:
The dimension of the holes could be customized according to client's requirements.
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3.Application:office, station,hotel,chamber,bank,shopping mall,exhibition building..
Â4.The Sample Projects Of Aluminum Perforated Ceiling/Acoustic Ceiling.

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Welded neck flange not easy to distortion, good sealing, widely used, butt thinning transition weld joints ,horn shape, avoid shape change when welding in high temperature. applicable to high temperature pipeline, high pressure and low temperature pipeline, normally used to connect pipes and valves which PN is greater than 2.5MPa; also used to transport expensive, flammable, explosive media pipeline.
Product:Welding Neck Flange
Size:DN10-DN2500
Materials: 20#.A105.Q235A.12Cr1MoV.16MnR.15CrMo.18-8.321.304.304L.316.316L
Pressure: Pn2.5-Pn320,Class150-Class2500,5K-30K
Standard:ASME B16.5ASME.B16.47.DIN2573.2572.2631.2576.2632.2633.2543.2634.2545,JIS 2220
Crafts: Forging
Connection: Welding,Bolt.
Package: Wooden boxes,Wooden pallets,According to customer requirements.
Brand Name: HY
Place of Origin: China (Mainland)
Certification: ISO.UKS.SGS.BV
Application: Chemical, Water, Oil and gas, Electricity
Welding Neck Flange,Weld Flange ,Long Weld Neck Flange ,Reducing Weld Neck Flange
CANGZHOU HAOYUAN PIPE FITTINGS MFG CO.,LTD , http://www.pipefitting-china.com