Product Description

~Todays competitive environment compels businesses to seek every possible advantage. Smart companies are looking at all possibilities, including material advantages. New material technologies and lined pipe*3manufacturing processes are solving problems that previously have limited product life cycles and created exposure to costly field failures. Sectors including Oil & Gas, Chemical, Power and Construction for example, are encountering applications where corrosion, high temperatures and pressures, and wear are limiting the lifespan or capabilities of their products and projects.

 Previously, solid alloy or weld clad products have been the best options available, but those are both costly and can have extremely long lead times. Longtaidi has an attractive option for consideration, we are proud to offer mechanically lined pipe manufactured to API 5LD that offers corrosion resistance at a fraction of the price of previous materials.

Material & Size

Our pipes and tubes consist of a carbon steel backing material manufactured to API, ASTM and ASME lined pipe*4specifications currently recognized and accepted by industry throughout the world, married to corrosion resistant alloys (CRAs) selected by the customer for the individual project need. The number of CRA options available is large, including **0 series stainless steels and many other UNS alloys with the ability to deter corrosion and cracking. Our patented manufacturing process offers both technical and economic advantage.

 Backing Material：API Spec 5L ASTM A**3 ASTM A**6

 Lining Material：LC***2 LC***5 UNS S*****0 S****3 S****0 S****3 S****0 S****3 S****0 N****4 N****5 N****0 N****0

 Nonferrous metal such as Titanium, Copper, Aluminum, etc

 Backing pipe OD: *1.3~**1mm

 Backing pipe WT: 3~*0mm

 Line pipe WT: 0.5~6mm

 Length range:≤****0mm

 Fully customizable to meet your specific environmental needs.

Technical Innovation:

Our patented manufacturing process produces superior finished products. Our process eliminates distortion of the CRA liner, there is significantly less variation of the inner layer when compared to traditionally manufactured lined pipes that are hydrostatically formed. Our process yields significant benefits to the customer; principally allowing uniform circumferential welds, limiting dilution with superior weld strength. Additionally, our manufacturing process produces exceptional grip strength between base metal and CRA liner.

 We also offer several end finishes, manufactured to exacting tolerances. Incorrect or non-uniform end lined pipe*2finishes take additional time to install in the field and can mitigate the benefit of the CRA liner. We work with each customer to ensure they are provided with the best end finish solution to assist in rapid and cost effective installation. In addition, we manufacture each piece to the customers specified length, reducing required installation resources by providing a factory finished end exactly where it is needed.

Our companys CRA lined pipe is made by JCOE molding method. Its raw material is explosive clad plate, which meets the requirements of the standard ASTM related cladding material. We produce lined piping according to API Spec 5LD****5 CRA Clad or Lined Steel Pipe and other technical requirements of customers

Manufacturing Process

clad pipe 2Cutting Chamfered- Pre Bending- Bend Tack Welding- Inter Welding for Backing Steel Outer Welding for Backing Steel Detection Inner Welding for CRA layer- Detection Heat Treatment- Circle Calibration and Straightening- Pipe End Expansion- End Processing- Hydro Test- Detection Acid Pickling Beveling- Painting Final Product Checking- Marking and Packing- Delivery

Tolerance

clad pipe1We control the forming process strictly and it is stricter than API 5LD which can control unfitness when butt weld and can ensure welding quality and corrosion resistance property of CRA layer. We can control the OD tolerance within ±1.0mm, the ovality tolerance within *0mm pipe end is less than 0.5% OD, ovality tolerance of pipe body is not exceeding 1.5% OD. We also can do the lined pipe according to the requirement of customer.