| Customization: | Available |
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| Application: | Automotive Industry, Chemical Industry, Food Industry, Oil and Gas Industry, Pharmaceutical Industry |
| Certification: | CE, ISO9001 |
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| Product Description |
| Stainless steel welded pipes, also known as welded tubing, are created by rolling stainless steel strips into tubes and welding them along their entire length. The weld seam can be left as is or refined using cold rolling and forging techniques. These metal pipes are used extensively in industrial settings for transporting liquids and gases, as well as in plumbing projects for conveying hot or cold water. |
| Working principle of stainless steel seamless pipes: |
| Stainless steel seamless pipes are produced by heating stainless steel billets to a certain temperature and then rolling them into shape using piercing or extrusion methods on seamless pipe mills. This method eliminates the need for welding and demands high precision in terms of inner and outer surface finish as well as dimensional accuracy. Stainless steel seamless pipes are widely used in high-pressure, ultra-high-pressure, chemical, and petroleum industries, as well as in mechanical structures requiring high dimensional precision. |
| Working principle of stainless steel welded pipes: |
| Stainless steel welded pipes are created by rolling stainless steel plates or strips into tubes and then welding them along their length. Welding methods may include high-frequency induction welding, resistance welding, or other welding techniques. Post-welding, the pipes may undergo cold rolling or forging to enhance their mechanical properties and relieve stress in the weld seam area. These pipes find applications in industries for transporting liquids and gases and in construction projects for piping systems. |
| Working Principle |
| The working principle of a stainless steel welded tube involves heating two steel pieces and joining them through welding, using a filler material to fuse the joint. Typically, these pipes are manufactured by roll-forming stainless steel strips or sheets into a tube shape and then welding them longitudinally along the pipe's length. This process can utilize either hot-forming or cold-forming techniques, with cold forming yielding smoother finishes and tighter tolerances. The welded seam can be left beaded or refined further using methods such as precision cold drawn seamless steel tubing. |
| Technical Data |
| Material : Stainless Steel |
| Material Grades: TP304, TP304L, TP316 and TP316L |
| Manufacturing Process: Seamless, Welded, Heavily Cold Worked |
| Wall thickness: 10 - 40 Schedule;Can also be customized according to customer needs |
| Pipe Length: up to 6.0 meters;Can also be customized according to customer needs |
| Surface Finish: polished, satin, mill;Can also be customized according to customer needs |
| Pressure Rating: Class 1;Can also be customized according to customer needs |
| Tests: ultrasonic, hydrostatic and visual inspection |
| Outer Diameter | Seamless Pipe: 3.18 mm-1219 mm | |
| Welded Pipe: single slit (12.7mm-2540mm);girth(101.6mm-3048mm), | ||
| Thickness | Seamless Pipe: 0.5mm-60mm | |
| Welded Pipe: single slit (.05mm-25mm);girth(3mm-25mm), | ||
| Tolerance | According to the standard | |
| Surface | 180G,320G, 400G Satin/Hairline | |
| 400G, 500G, 600G or 8OOG Mirror finish | ||
| Test | UT,ET,HT,RT, ect and others according to the standard or as per customer request | |
| Certificate | ISO9001-2008, ASME, PED | |
| Steel Grade | 200 Series: 201,202 | |
| 300 Series: 301, 304, 304L, 316, 316L, 316Ti, 309, 310, 317,321 | ||
| 400 Series: 409, 410, 420, 430, 436, 444, 441, 440c | ||
| Duplex Steel : 904L, 2205, 2507, 2101, 2520, 2304 | ||
| Manufacturing Method | Cold Rolled, Hot Rolled | |
| Manufacturing Technique | Seamless,Welded(ERW, EFW, Seamless, Spiral Welded) | |
| Shape | Round, Square, Rectangular | |
| Surface | Primary, Bright Polished, Hairline, Mirror | |
| Standard | ASTM A213, A312, ASTM A269, ASTM A778, ASTM A789, DIN 17456, | |
| DIN 17457, DIN 17459, JIS G3459, JIS G3463, GOS T9941, | ||
| EN 10216, BS3605, GB13296, 904L duplex, etc. | ||
| Material | 201, 202, 301, 304, 304L, 304N, XM21, 304LN, 309S,310S, 316, 316TI, 316L, | |
| 316N, 316LN, 317, 317L, 321, 329, etc. | ||
| Surface | Pickling, annealing, polishing, bright, sand blast, hair line etc. | |
| Standards: | ASTM A213M-94b, ASTM A249M-94a, ASTM A269-94a, | |
| ASTM A312M-94b, etc. | ||
| DIN 17456-85 DIN 17458-85 DIN 17459-92 etc. | ||
| JIS G3446-1994 JIS G3448-1997 JIS G3459-1997 JIS G3463-1994 etc. | ||
| GB13296-1991 GB14975-2002 GB14976-2002 etc. | ||
QUALITY CONTROL
We possess multiple testing reports, product testing equipment, and our ownproduct laboratory. lf your project requires specific testing reports, pleaseinform our service team, and they will prepare all the necessary materialsfor your review in advance.
How We Protect Your Investment:
Free repair/replacement for any manufacturing defects within 1 year
Priority technical support via email/WhatsApp
Extended warranty options available (Ask us for upgrade plans)
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, API, 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.
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.
We also provide stainless steel fittings with welded or threaded ends, including elbows, tees, reducers, crosses, end caps, end plugs, and stub ends. If you have any additional requirements, please feel free to contact our service team.
| Product Range | Stainless steel fittings/stainless steel |
| Stainless steel flange | |
| Stainless Steel Threaded Valves | |
| Stainless steel flange valve | |
| Stainless Steel Threaded Fittings | |
| Stainless Steel Tubes | |
| Year of Establishment | 2012 |
| Plant area (square meters) | 3000-5000 |
| Total number of employees | 100 |
| production capital | $7.71 million |
| Annual output value | US$10 Million - US$50 Million |
| Annual production | Stainless Steel Flange:2400 ton |
| Steel Valve:1800 ton | |
| BW Pipe Fittings:2200 ton | |
| Threaded Pipe Fitting:1250 ton | |
| Stainless Steel Pipe:3520 ton | |
| R&D capability | OEM, ODM, Own Brand(ZT) |
| Company equipment | We have advanced production equipments: special automatic molding equipments, powerful electric solidification melting furnace with automatic recording temperature and time intelligent temperature controller, advanced shot blasting and pickling, passivation equipments and so on. The company now has advanced testing equipment and has mastered the corresponding testing technology. Photoelectric direct reading spectrometer for chemical composition analysis; X-ray, ultrasonic, liquid penetration and other non-destructive testing; hardness tester for hardness testing; thickness gauge for wall thickness testing, etc. |
| Product Applications | The products are widely used in papermaking, shipbuilding, petroleum, chemical, electric power, bioengineering, natural gas, sewage, construction, medicine, food (dairy) and other industries. |
| Certificates | ISO14001,ISO9001,ASME,CCC,CE |
| Key Competitive Advantages | Strict inspection, integrity, fast response to order questions |
| Provision of design services | Yes |
| Percentage of exports | 21%~30% |
| Markets Served | North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe |
| Own brand name | ZT |
PRODUCTION EOUIPMENT
We have multiple complete production lines enabling us to fulfillurgent orders or large quantity orders in the shortest
possibletime while ensuring product quality.
LAB/TESTING ROOM
Some customers have extremely high precision requirements for their products. As a result, we established a dedicated research laboraton to provide more accurate data reports for our clients.
1. Are you a trading company or factory?
ZT:We are a manufacturing factory. Zhejiang Zhitong Pipe Valve Technology Co., Ltd. has been dedicated to the development and research of products for 15 years, including stainless steel pipe fittings, stainless steel valves, and stainless steel flanges. Our advanced production equipment, complete product line, and comprehensive inspection methods ensure the quality of our products. We have the sovereignty for exporting and importing, as well as over 15 years of export experience, providing strong assurance for our customers.
2.May I request a free sample before placing an order?
ZT:Yes, our company is pleased to provide you with free samples for quality testing; however, the freight cost will be borne by your side.
3.What is the production time?
ZT:Sample Order: 4-7 days if out of stock, or delivery at once.
Massive Order: 5-20 days after receiving the deposit, depending on the specific order.
4.What qualifications or certifications do you have?
ZT:We hold an import and export license, as well as the following certifications: ISO 14001, ISO 9001, ASME, CCC, and CE. Additionally, our company possesses several design patents.
5. What payment terms does your company accept?
ZT:For small testing orders, we accept Western Union and T/T. For large orders, we accept T/T and L/C. If you have any other questions, please feel free to contact us using the information below.
6. Can you provide us with the testing report?
ZT: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.
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