Wenzhou/Stainless Steel/304/316/316L/Xxxnx/PED/Vacuum/Blind/Slip on/Weld Neck/AISI 150 RF Female Thread Bsp/NPT Threaded Screw/Pipe Flanges
ZHEJIANG ZHITONG PIPE VALVE TECHNOLOGY CO.,LTDZHITONG is a professional manufacturer of pipe fittings, valves, and flanges, serving industries including water treatment, construction, petrochemical, and oilfield. Equipped with an ISO 9001 and CE-certified modern factory, we strictly adhere to international standards (GB, JIS, DIN, EN, ANSI/ASME) to ensure superior performance in material quality, pressure resistance, and reliability. With competitive pricing, fast delivery, and customization capabilities, we are committed to providing stable and high-quality industrial piping solutions, striving to be your trusted long-term partner.
ZHITONG also offer Stainless steel flanges, slip-on flanges, blind flanges, weld neck flanges, lap joint flanges, flat welding flanges, loose flanges, pipe flanges, plate flanges, socket welding flanges, hose coupling flanges, flange expansion joints, seamless pipes, stainless steel pipes, etc.
Wenzhou Zhitong Pipeline Industry Co., Ltd.
Wenzhou Zhitong Pipeline Industry Co., Ltd. is a professional pipe fittings,valves and flanges manufacturer and exporter for water treatment, construction, petrochemical and oilfield industry. We deliver exceptional value by providing customers with the most important elements : Premium Quality, Reasonable Price and Impeccable Services.
Zhitong Pipeline designs and builds a broad array of quality products in its ISO 9001 and CE manufacturing facility. Our products adhere to GB, JIS, DIN, DIN, EN, ANSI/ASME specifications for material content, pressure ratings and quality assurance, ensuring that our customers receive consistent quality and reliability every time. Additionally, we are able to modify existing products or manufacture new designs to meet specific requirements. 
FAQ
1. Are you a trading company or factory?
We are a manufacturer boasting 15 years of industry experience and holding proprietary import-export rights.
2.May I request free samples?
Free samples can be provided for first cooperation under sincere cooperation.
3.What certifications do you have?
Yes, we hold ISO, CE, and PED certificates. In addition, we possess a number of design patents and a Special Equipment Manufacturing License.
4.How do you control the quality?
In quality control, the most critical aspect is preventing material mix-ups.
Our factory has installed multiple spectroscopic PMI analyzers in the raw material warehouse, production workshop, and dispatch area.
Equipment such as pressure testing machines, PMI analyzers, RA roughness testers, and hardness testers all contribute to ensuring quality. Additionally, we have our own laboratory and can provide extra test data for special products.
During the production process, dedicated inspectors conduct checks at different stages.
Furthermore, a specialized team of quality inspectors examines finished products to effectively prevent issues like quantity shortages, quality defects, and chemical mix-ups.
5.If there is any quality problem, how do you solve it?
We believe that protecting our clients' interests is the cornerstone of our business. While we cannot guarantee 100% perfection, occasional quality issues may still arise.
Depending on the specific situation, we typically resolve such cases through replacements, compensation, or resending goods. The specific solution will be discussed and agreed upon with the customer based on the actual circumstances.
6. How long is your delivery time?
For normal products in 7-10 days; For bulk order, in 15-25 days. It depends.
7. Warranty time?
3 years warranty for all of our stainless steel products. Gaskets or the easy broken parts are not included due to the different application for customers.
8.Can you provide us with the testing report?
Yes, we can provide the required material reports, such as the material certificate, mill certificate, pressure testing report, roughness report, measurement report, and hardness report.