Helical Seam Saw Large Diameter Pipes SSAW Spiral Welded Structural Pipe En10219 S355j0h and A252 Steel Piling Pipe for Construction of Marine and Offshore Structures

Product Detail

A252 Helical Seam Large Diameter SSAW/ SAW Spiral Welded Structural Pipes and Piling


 

PIPE PRODUCTION


Production program

Tianjin Huilitong Steel Pipe  is producing SAW (Submerged arc welding) spiral pipes on two welding lines with annual production capacity 80,000-100,000 tons per year. 

Tianjin Huilitong Steel Pipe produces pipes in sizes ranging from 219 mm to 2540 mm outside diameter, wall thickness from 6,0 mm to 25,0 mm and length from 6 m to 40 m.

The pipes are delivered in accordance with EN, DIN, API and ISO standards or in accordance with agreed terms or standards. 

The main sectors supplied include pipes for the transport of gas, oil and water as well as pipes for the construction markets.

Testing

Each pipe undergoes a series of non-destructive tests: - ultrasonic test, X-ray test, pressure test and visual inspection of surface and welds from outside and from inside the pipe. All results are recorded and archived.

Certificates and Quality Control System

The production process is certified according to EN ISO 9001; EN ISO 14001; API Spec.Q1 standards by American Petroleum Institute.

In addition, the high quality of our pipes has been confirmed by following product certificates:

• Certification of Quality Assurance System for Material Manufacturer acc. to Directive 97/23/EC 

• Certification of Factory Production Control according to EN 10219-1 for Structural Sections

• Certification of Conformity with EN ISO 3834-2

Basic dimension

Dimensions [mm]	minimum	maximum
diameter	219	2540
wall thickness	6,0	25,0
Standard lengths	6,0	40,0

Principal Fields of Application

• Gas distribution pipelines

• Crude oil pipelines

• Hot water conduits

• Potable water distribution

• Sewage conduits

• Civil engineering and structural purposes

Surface Protection

Special Requirements

STANDARD	GRADE	APPLICATIONS
EN 10217-1	P 235 TR1, P235 TR2, P265 TR1, P265 TR2	Steel pipes for high pressure purposes. Technical conditions of supply. Part 1: Non-alloyed steel pipes with specific properties under surrounding enviroment temperature
EN 10217-5	P 235 GH, P 265 GH	Steel pipes for high pressure purposes. Technical conditions of supply. Part 5: Non-alloyed and alloyed steel pipes welded under flux with specific properties under higher temperature.
EN 10224	L 235, L 275, L 355	Non-alloyed steel pipes and shaped pices for transport of liquids, drinking water inclusive. Technical conditions of supply,
EN 10219-1,2	S 235 JRH, S 275 J0H, S 275 J2H, S 355 J0H, S355 J2H	Welded hollow section made of non-alloyed and fine-grained cold-formed steel. Part 1: Technical condition of supply. Part 2: Tolerances, dimensions and cross-section properties.
ISO 3183 PSL1	L 245-B, L 220-X42, L 320-X46, L 360-X52, L390-X56, L415-X60, L 450-X65, L 485-X70	Petroleum and gas industry. Steel pipes for pipeline transport system.
ISO 3183 PSL2	L 245M-BM, L 290M-X42M, L 320M-X46M, L 360M-X52M, L 390M-X56M, L 415M-X60M, L 450M-X65M, L 485M-X70M	Petroleum and gas industry. Steel pipes for pipeline transport system.
API SPEC.5L PSL1	L 245-B, L 290-X42, L 320-X46, L 360-X52, L 390-X56, L 415-X60, L 450-X65, L 485-X70	Pipes Specification API Spec. 5L
API SPEC.5L PSL2	L 245M-BM, L 290M-X42M, L 320M-X46M, L 360M-X52M, L 390M-X56M, L 415M-X60M, L 450M-X65M, L 485M-X70M	Pipes Specification API Spec. 5L




BM PSL2 /L 245 M PSL2 / P 235 TR2 / P 235 GH / S 235 JRH	API Spec 5L / ISO 3183 / EN 10 217 -1 /EN 10 217 -5 / EN 10 219
S 355 J2H / X 52 PSL 1 /L 360 PSL 1	EN 10 219 / API Spec 5L / ISO 3183

Any special requirements exceeding the above standards are to be agreed upon before concluding the contract.

SPIRAL WELDED PIPES IN ACCORDANCE WITH EN PIPES IN ACCORDANCE WITH SEVERAL RELEVANT STANDARDS