Black Painted Seamless Steel Pipes

Material: Carbon steel

Advantage：

In fact, because seamless steel pipes have higher pressure-bearing capacity, seamless steel pipes may be used more widely.

Compared with solid steel (seamless steel pipe), seamless steel pipe is light in bending and torsion strength, and it is economical steel.
Using seamless steel pipes to make rings can improve material utilization, simplify manufacturing processes, and save materials and processing time.

Application:

We ofter standard size en10210 s355j2h seamless pipe that are mainly used in oil & gas industries, automobile & engineering industries.

This is the most common & widely used product available in different sizes and thicknesses.

These pipe are known for their high durability.the pipes are available in standard sizes in accordance with en10210 standards.

Hot Dipped alv.Seamless Steel Pipes

Advantage：The hot dip galvanized seamless steel pipe has marvelous corrosion resistance because of its galvanized coating. By making molten metal react with the substrate to create an alloy layer, the product offers secure bonding between the coating and the substrate, and the coating thickness is uniform as well.

Application：water, gas, and oil conveyance
petroleum, chemical
construction industries to be used as the oil well pipe, the petroleum pipeline, the supporting bracket for trestles and underground tunnels, as well the pipeline for oil heaters,
cooling systems, and so on.
Therefore, hot dip galvanized seamless steel pipes can be used in industrial, agricultural, and oceanic climate conditions, and its service life increases with the increase of the zinc coating thickness.

Manufacturing Process：Firstly, the seamless tube undergoes acid washing so as to remove the iron oxides. Then, the product is washed in the aqueous solutions of ammonium chloride, or zinc chloride, or the mixed aqueous solution of ammonium chloride and zinc chloride. Finally, it is sent to the hot dipping tank to be galvanized.

3LPE Coated Seamless Steel Pipes

3-Layer Polyethylene  is a multilayer coating that is as commercially recognized by its shortened  name - 3LPE. As the name suggests, this coating constitutes of three functional  components:

• Layer 1: A high performance FBE primer or Fusion Bonded Epoxy primer.  Usually the corrosion protective layer. This layer is of combination bonded epoxy which offers exceptionally good corrosion protection. The fusion reinforced epoxy contains a very great holding with the blasted steel surface.

• Layer 2: A copolymer adhesive and the final constituent is an outer layer of polyethylene.This layer is the copolymer adhesive. The copolymer adhesive could be a maleic anhydride united polyethylene compound. This material has great chemical holding to the fusion reinforced epoxy and the beat layer polyethylene

• Layer 3: The final outermost layer of the finish is what provides the 3LPE Coated EFW Pipe with a tougher and  more durable form of protection.This layer is for physical protection and comprises polyethylene. Since the copolymer adhesive and polyethylene are comparable, they bond well with each other

advantage：

• 3LPE Coating prevents steel pipe from corrosion.

• Excellent chemical resistance properties and resistance to cathodic disbondment.

• 3LPE Coating has got good resistance to moisture permeability.

• Mechanical protection :

Top coat of polyethylene prevents abrasion and damage to fusion bonded epoxy during handling.

Polyethylene topcoat permits use of local material without relying on specific backfilling material.

• High bond strength :

  The external and internal 3LPE coating and lining is bonded firmly to the mild steel pipe surface and the mean adhesion strength is 125 kg/cm² (ASTM D 4541).

• Long working life :

Pipe has constant performance characteristics through out the life span. Service life of more than 75 years.

Seamless Steel Pipes Without Painting

Seamless pipe is produced in sizes from 1/8 to 36" nominal. Seamless pipe has no longitudinal seam or weld when compared to ERW pipe. In simple terms the seamless pipe is produced by piercing a solid round billet leaving behind a hollow seamless pipe. There are two main methods of producing seamless pipe;

Hot Rotary Piercing

Extrusion Process Method

In Extrusion Process, hot billets of metal are formed into seamless pipe by forcing the billets through extrusion dies and over a forming mandrel.