# Topper

We are a leading valve Manufacturer in China, offering top-quality Bolts & Nuts, Gaskets, Flanges, Steel Pipes, Industrial Valves, and Pipe Fittings.

## Table of Contents

- [About Us](www.valvegasketboltnuts.comabout.html): We are a leading manufacturer of pipe & fittings, including Pipes, Flanges, Fasteners, Gaskets, Fittings, Valves, and Spare Parts.
- [Factory Tour](www.valvegasketboltnuts.comfactory-tour.html): Factory Tour
- [荣誉证书](www.valvegasketboltnuts.comcertificates.html): 荣誉证书
- [Customers](www.valvegasketboltnuts.comcustomers.html): Customers
- [Videos](www.valvegasketboltnuts.comvideos.html): Videos
- [News](www.valvegasketboltnuts.comnews.html): News
- [Products](www.valvegasketboltnuts.comproducts.html): Products
- [下载中心](www.valvegasketboltnuts.comdownloads.html): 下载中心
- [Inquiry](www.valvegasketboltnuts.cominquiry.html): Inquiry
- [Tags](www.valvegasketboltnuts.comtags.html): Tags
- [Links](www.valvegasketboltnuts.comlinks.html): The friend link page showcases connections to the steel pipe, flange, gasket, and fastener manufacturers, fostering collaboration and networking.
- [Industries](www.valvegasketboltnuts.comindustries.html): Industries
- [文章管理](www.valvegasketboltnuts.comarticles.html): 文章管理
- [Search](www.valvegasketboltnuts.comsearch.html): Search
- [Contact](www.valvegasketboltnuts.comcontact.html): Contact us, China Valve Gasket Bolt Nuts Co Ltd, which has rich experience in projects and professional services.
- [Sitemap](www.valvegasketboltnuts.comsitemap.html): Sitemap
- [Privacy Policy](www.valvegasketboltnuts.comprivacy.html): Privacy Policy
- [Terms of Service](www.valvegasketboltnuts.comterms.html): Terms of Service
- [客户评价](www.valvegasketboltnuts.comtestimonials.html): 客户评价
- [Request a quote](www.valvegasketboltnuts.comrequest-a-quote.html): Request a quote
- [发展历程](www.valvegasketboltnuts.comhistory.html): 发展历程
- [Glossary](www.valvegasketboltnuts.comglossary.html): Glossary
- [Teams](www.valvegasketboltnuts.comteams.html): Teams

### Products Categories

- [Fastener](www.valvegasketboltnuts.comfastener.html): Top Quality Fastener Manufacturer Provides ISO 4014, ISO 4017, DIN 938, ASME B18.2.1, ANSI B18.2.1 Bolts and Nuts for Pipeline, 3/8-3.75 Inch, M8-M110.
- [Gasket](www.valvegasketboltnuts.comgasket.html): Top China Gasket Manufacturer Offers Carbon Steel, Stainless Steel Spiral Wound Gaskets for Pipe System, ASME B16.20, B16.21, 1/2-48 Inch, 150-2500 LB.
- [Pipe Fitting](www.valvegasketboltnuts.compipe-fitting.html): Best China Pipe Fitting Manufacturer Offers ASTM ANSI Elbow, Tee, Bend, Reducer, Cross, Coupling, Cap, Nipple, Union, 1/2-48 Inch, SCH 5-SCH XXS.
- [Flange](www.valvegasketboltnuts.comflange.html): Best China Flange Manufacturer Offers Forged Flanges with ANSI B16.5, B16.47 A, B16.47 B, MSS SP 44, API 605, 6A, AWWA C207, DIN, EN-1092-1, BS Design.
- [Steel Pipe](www.valvegasketboltnuts.comsteel-pipe.html): Best China Steel Pipe Manufacturer Offers Pipes in Stainless Steel, Alloy Steel, Duplex Steel, 1/2-48 Inch, DN15-DN1200, SCH 5-SCH XXS, PE, BE Ends.
- [Valve](www.valvegasketboltnuts.comvalve.html): Top China Valve Manufacturer Supplies Industrial Valves in Carbon Steel, Stainless Steel, Alloy Steel, Aluminium Bronze, 1/2-48 Inch, Class 150-2500 LB.
- [Packing](www.valvegasketboltnuts.compacking.html): China Low Emission Packing Manufacturer Provides Valve Packing Made from Graphite, PTFE, Reinforced by Inconel/SS, Achieving Good Sealing of Valves.

### Tags Categories

- [Sizes](www.valvegasketboltnuts.comtags/sizes.html): Sizes
- [NPS (Inch)](www.valvegasketboltnuts.comtags/sizes/nps-inch.html): NPS (Inch)
- [DN (mm)](www.valvegasketboltnuts.comtags/sizes/dn-mm.html): DN (mm)
- [Standards](www.valvegasketboltnuts.comtags/standards.html): Standards
- [Materials](www.valvegasketboltnuts.comtags/materials.html): Materials
- [Pressure](www.valvegasketboltnuts.comtags/pressure.html): Pressure
- [Class](www.valvegasketboltnuts.comtags/pressure/class.html): Class
- [PN](www.valvegasketboltnuts.comtags/pressure/pn.html): PN
- [Product Types](www.valvegasketboltnuts.comtags/product-types.html): Product Types
- [R](www.valvegasketboltnuts.comtags/sizes/r.html): R
- [PSI](www.valvegasketboltnuts.comtags/pressure/psi.html): PSI

### Main Page

- [Our Customers](www.valvegasketboltnuts.comour-customers.html): Our Customers, Pages Content, Published at `Feb 22, 2023`, Updated at `Mar 09, 2023`
- [Our advantages](www.valvegasketboltnuts.comour-advantages.html): Qishine has advantages of manufacturing fasteners and gaskets for harsh environments. Our factory is ISO, API, PED certified, and the third-party inspection., Pages Content, Published at `Feb 27, 2023`, Updated at `Oct 16, 2023`
- [Factory Tours](www.valvegasketboltnuts.comfactory-tours.html): Factory Tours, Pages Content, Published at `Mar 10, 2023`, Updated at `Oct 16, 2023`