Our company can provide one-stop solution for bimetallic composite pipe factory.
The bimetallic composite pipe is composed of two different metal materials, and the tube layers are tightly combined through various deformations and connection technologies, so that the two materials are integrated into a new type of metal composite pipe. The general design principle is that the base material meets the allowable stress of the pipeline design, and the coating is resistant to corrosion or wear. The bimetallic composite pipe has all the advantages of the base layer and the composite layer, which can effectively reduce the cost compared with the overall alloy pipe, and the composite pipe can be improved in the chloride and/or acidic environment with the sensitivity to stress corrosion cracking of the overall alloy pipe. Safety and reliability. With the development of industrial technology, the complexity of environmental media, and the intensification of international competition, many industries have increasingly higher requirements for the comprehensive performance of metal pipes, so bimetallic composite pipes and their production technology have been rapidly developed.
After years of research and promotion, the composite pipe has been widely recognized in the corrosive petroleum, petrochemical enterprises, nuclear industry, medicine, food processing and other fields. Mine ore powder and tailings slurry transportation and other high-wear working environment requirements. With people’s emphasis on health, the sanitation of drinking water is becoming more and more important. The bimetallic composite pipe solves the practicality and economy well, and will be used in drinking water pipes in large quantities, with great market potential.
By putting a thin-walled stainless steel pipe into a carbon steel pipe, and then closely fitting the two materials in two ways, one is metallurgical compounding, the two materials are metallurgically compounded together by high pressure of underwater blasting, and the adhesion of metallurgical compounding The bonding strength is very high, and the two materials will not peel off; the other is mechanical compounding. The two materials are bonded together by means of water pressure, spinning, drawing, etc., but the bonding force is much lower than that of metallurgical compounding.
The advantages of metallurgical compounding are many, but due to the complex process and huge investment, it is difficult for ordinary enterprises to implement. The mechanical compound investment is relatively small, but the compound strength is low and the use occasion is limited. The production method of lining compound is single production, so the output is relatively low and the price is relatively expensive.
Base Pipe: Procurement-Sandblasting on The Inner Wall-Offline Ultrasonic Flaw Detection-Waiting.
Lining: Unit Production-Offline X-Ray Inspection-Offline Ultrasonic Inspection-Waiting.
Compounding: Casing Machine—Hydraulic (Spin) Compounding—Flat Chamfering—Pipe End Sealing and Welding—Spraying—Finished Product Collection
By purchasing steel coils that have been metallurgically compounded in the steel plant, welding is carried out using special continuous production units and special welding techniques, and continuous production of composite pipes is carried out. The biggest advantage of this production method is that the metallurgical compound with the most difficult manufacturability is completed in a large steel mill. The pipe factory directly buys composite steel plates and steel coils for production. The production method of steel pipes is free of manual methods, suitable for industrial production and large output. The disadvantage is that the price of composite steel plates and steel coils is more expensive than that of two layers of steel pipes.
Inner composite units are divided into spiral composite units and straight slit composite units. Straight joint compound units are suitable for pipes with a diameter of less than 630, and spiral compound units are suitable for pipes with a diameter of more than 219.
Straight Seam Composite Unit: Roll Up-Uncoil-Unwind Leveling-Milling-Straight Seam Forming-Welding-Sizing and Straightening-Cutting to Length-X-Ray Inspection-Hydraulic Test-Offline Ultrasonic Inspection-Flat Chamfering —Weighing and Measuring Spray Mark—Finished Product Collection
Spiral Composite Unit: Rolling Up-Uncoiling-Unwinding and Leveling-Milling-Delivery-Guide-Spiral Forming-Welding-External Welding-Internal Welding-Sizing and Straightening-Flat Chamfering-Hydraulic Test and Diameter Expansion- X-Ray Inspection-Off-Line Ultrasonic Inspection-Weighing and Measuring Long Spray Mark-Finished Product Collection