Stainless Steel 304/304L Industrial Durable Welded Coiled Tubing for Downhole Tools

304/304L Welded Coiled Tubing：

304/304L Industrial Durable Welded Coiled Tubing is made from austenitic stainless steel with excellent corrosion resistance, mechanical strength, and weldability. The 304L grade, with lower carbon content, minimizes intergranular corrosion after welding, making it ideal for high-temperature and corrosive environments. This coiled tubing is widely used in chemical processing, oil and gas transportation, heat exchanger systems, and water treatment applications. Its stable performance under pressure and temperature variations ensures long-term reliability in demanding industrial conditions.

Parameter Table：

Welded Coiled Tubing:

Material: TP316/L, TP304/L, TP 321/H, S32205, S32750, Alloy 825/N08825, Alloy 625/ N06625

Type: Welded

Outer Diameter: 3.18-38.1mm, 1/8",3/16",1/4",3/8",1/2", 5/8",3/4",1111/4",11/4",11/2"

Wall Thickness: 0.4-2.54mm|0.016"-0.1"

Length : According to customers’ needs, up to 50000fts

Standard: ASTM A269/A213/A789/B704/B163,etc.

Certificate: ISO/PED

Inspection: ET, Laboratory testing

Package: Wooden or iron reel

Chemical Composition：

Physical Property：

Factory advantages and features：

MTSCO, which provides coiled tubing services, has been supplying quality products to the international geothermal, heat exchanger, shipbuilding, oil and gas industries since 2006. We can manufacture to various international standards covering major materials such as 304, 316, 2205, 2507, alloy 625, 825 and more. In recent years, we have made remarkable progress in the field of control line tubing, downhole control lines and chemical injection control lines, mainly producing welded/seamless continuous tubulars, single/multi-core control lines, capillary tubing and so on.

Choosing MTSCO has 5 advantages to give you peace of mind:

Firstly, our welded coiled tubing are available in lengths up to 33,000fts/coil.

Second, welded coiled tubing are hydrostatically tested to a max of 100MPA.

Thirdly, seamless coiled tubing can be up to 120kg/reel.

Fourthly, we offer various types of encapsulated overmoulding materials to meet diversified needs.

Finally, MTSCO coiled tubing have been awarded ISO/PED certificate, which provides a reliable certification of product quality and standard.

Quality Control Methods:

First, secondary inspection of raw materials. Our raw materials come from large factories such as POSCO，JISCO, ANSTEEL, ATI, NYK, Outokumpu, TSINGSHAN, Baosteel, WALSIN, ... Each batch of raw materials requires MTC and PMI. After the raw materials arrive, we conduct PMI and other inspections again to ensure that they meet the requirements. Second, traceability of the production process. The mainly production process includes welding, cold drawing, bright annealing and plastic wrapping. Each process is supervised by experienced engineers and technicians. Each link is supervised by professional qc inspectors and photographed for archiving. The entire process uses process cards to ensure accuracy and traceability. Third, 100% inspection before shipment. Siri Tubing has professional QC team to conduct a series of inspections and experiments on the tubes, including routine appearance, PMI, size, quantity, and other inspections. At the same time, we also conducts mechanical testing, hardness testing, airtightness,UT, ET, HT and other tests. All welded coiled tubing have passed 100% high-pressure testing,with a conventional testing pressure of 40MPa and a maximum of 100MPa. In addition, we also accept third-party inspection, such as SGS, TUV, and BV.

Product Packaging：

Customer Cases：