ASTM A254 DC04 6*0.65mm Both side copper-coated Steel Bundy Tubing

Our products include single & double wall Bundy tube. Pipes OD 3.17-15MM and thickness 0.5-1MM are all available.

Copper brazed double-wall steel tube is made of steel strip which is copper plated on both sides. It has widely applied for automobiles, refrigerators and other hydraulic system industries.

Single wall steel tubing is the most common type of tubing used in household refrigeration applications. Bundy single wall tubing is manufactured by continuously forming a single low carbon steel strip into a tubular shape and welding the adjoining edges using a high-frequency induction welding process. Through strict process controls, the internal weld bead is held to a minimum and all external flashing is removed. Corrosion-resistant coatings are applied inline to assure uniform coverage.

SINGLE WALL STEEL TUBING OD & WT TOLERANCE

All the tube diameters can be available plain, zinc-coated or copper coated.

PLAIN TUBE

Plain tube is supplied with its outside surface slightly oiled to improve the resistance to oxidation. The tube shall be kept in dry storages, away from air drafts, humidity or any other corrosive agents

ELECTROLYTIC BOTH SIDE COPPER COATING

The steel strip from which the tube is made shall be copper coated on both sides with a copper layer ≥2µm. The area along the welding seam, on the outside surface is not coated because of the scarfing operation to remove the excessive bead.

HOT-DIP ZINC COATING

The tube outside surface can be coated with a layer of zinc whose weight is ≥ 70 grams per square meter determined by UNI EN ISO 1460/97. This coating the tube withstands to > 72 h in salt spray fog test before showing red rust (according to UNI ISO 9227).

WORKING SHOP

Laboratory Testing Equipment

PACKING

Changzhou Joyruns Steel Tube Co., Ltd specializes in the export of steel pipes for 20 years. We have been a leading supplier of high-quality steel pipes of carbon, alloy, nickel material & copper, which is one of the most professional Bundy and stainless steel pipe manufacturers in China.

Changzhou Joyruns steel tube Co., Ltd has advanced technology, equipment, management and a good reputation, ensures that high-quality products and services are provided, the customer is satisfied. The company has implemented an effective quality assurance system, and long-term planning, maintenance, control and improvement of the quality of the products. 

We uphold the "JOYUNS" brand "win-win cooperation and practical innovation"

The product categories are as follows:

Bundy tube: Single-wall copper tube, Single-wall galvanized tube, Double-wall copper pipe, Double-wall zinc-coated Bundy tube, Aluminum tube, Copper tube

Carbon steel pipe: A179 heat-exchanger tube, Boiler tube, Alloy tube, Automobile precision pipe

Stainless steel pipe: Austenitic stainless steel pipe, Duplex/Super Duplex stainless steel pipe, Nickel alloy steel pipe, Titanium steel pipe.

All staff sincerely thank you for your concern and use of our products, and sincerely welcome your valuable comments on our products and services.