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Home > Products > Dredging And Marine Parts > Pipe Line > high quality customized Square tube with or without flanges (USB2-059)

high quality customized Square tube with or without flanges (USB2-059)

Product Description

Specifications Square tube

High accuracy, full penetration welded

Spiral, LSAW, SAW

Certificate API5L, ISO9001,

  Product Description  What is the specifications of our Square tube                         high quality customized Square tube  with or without flanges            A. General With advanced produce line, equipment and skilled workers, we can provide spiral, saw, Lsaw steel pipe and other pipes and structures. Our main scope of pipe business are submerged pipe, Floating Pipe, and shore pipe for dredging, marine work, oil field etc.   B. Construction The construction is to be built according to the drawing with rules of good workmanship.   C. Materials All fabricated steelwork used in the construction of the Pipe Line will be to manufacturing standard of UniSite or other classification society. All materials proposed will be selected to comply with the latest Health and Safety Rules. Paint systems for hull protection will be of the highest quality (Hempel, Inter, Sigma, Jotun)   D. Welding All welding will be performed in accordance with drawing and standard and UniSite experience and all welding will be continuous and full penetration.   E. Main particulars



High accuracy(ISO2768, ISO5817, ISO13920); Detail: ID+/-2mm, Length within 5mm, straightness: <1mm/1m


10#-45#, Q195-Q345, X42-X80, L245-L255 or other materials


Spiral or Longitudinal single seam pipe or Longitudinal with crossing seams


As per drawing

Out diameter

Spiral: 219-3200mm

LSAW: 406-1420mm

SAW: 406-5080mm

Wall thickness

Spiral: 4-28mm

LSAW: 5-60mm

SAW: 5-150mm


API 5L, BS 1387, GB/T 3091-2001, GB/T9711, ASTM A53-2007, ASTM A252-1998

Special capacity

Can produce ID800*25 specification for Spiral pipe


Sa2.5 blasted and two or three layers painted with highest quality


as per clients' requirements, normal weld stainless mark plate


material, construction, dimension, welding seam, non defective test, paint inspection


Recyclable, in line with environmental requirements and standards, and reliable

  F. Process of production Spiral: Storage—Uncoiling—Flattening—Material inspection, shearing, crossing welding, edge milling, crimping press—Forming—Inside and Outside welding, de-magnetization, cutting—Ultrasonic testing—Cleaning, inspection, grinding—Pipe end expanding—Hydrostatic testing—Ultrasonic testing and X-ray testing—Beveling and chamfering—Weighting and measuring—Marking—Final inspection—Storage JCOE(LSAW): Storage-Plate feeding—Ultrasonic inspection—Flame cutting—Edge milling—Crimping press—JCO shaping—Prewelding—Inside welding—Outside welding—Ultrasonic inspection—Mend welding—Ultrasonic inspection—Tube expander—Rounding—Alignment—Beveling and chamfering—Hydrostatic testing—X-ray testing—Weighting and measuring—Marking—Final inspection—Storage   H. Certificates - Material certificates EN10204 3.1b - Inspection protocol - NDT reports - Fixed certificate: ISO9001, BV certificate, API   What is Accessories of our Square tube                                     A. Main    With flanges or without flanges at pipe ends.  We can weld flanges with good quality.   Photos of our Square tube                                                                          Our Services      Besides above the general specifications, we can also supply some specific pontoons and other similar steel structure as clients' requirements.     Packaging & Shipping bulk package and bulk vessel transportation frame container package and frame container transportation   Company Information Company View                                                                             Long-term cooperation with world top dredging and marine companies for more than 10years, UniSite is specialized in providing comprehensive service and parts of dredging, Land Reclamation, offshore, marine, municipal projects. UniSite is one of the most professional dredging and marine companies in design, manufacture, and construction and related products and services. UniSite group has a perfect managing system and our staff who are professional in technology are committed, passionate, efficient.     Safety & quality are the key factors of UniSite group with good QHSE experience and ISO9001/BV certificate. With professionalism, vitality, innovation, respect, team spirit, UniSite culture (corporate values, corporate philosophy and behavior shaping) is continuously developing, along with our company from its foundation. UniSite group is able to offer our client best possible and most sustainable solutions to their requirement. More detail please refer to our website: /      Our certificates                                                                                     FAQ Q1:What is our advantage?   A1:We are specialized in providing comprehensive service as well as relevant items of dredging, land reclamation, offshore projects, marine engineering, municipal engineering, mechanical engineering, oilfield projects and environmental remediation projects   We have the whole advantaged production equipment.
We have a perfect technology system and quality control system which from initial work, to process control, to final control, forming the whole process traceability with a good command of quality and production schedule, ISO,BV certificate.  
Q2:Why choose us?
A2: We have more than 10 years supplying experience for other international top contractors.Our products and service are involved in many business cases and big projects all over the world.
Advantaged equipment, technology, quality, service with good price.      Q3:How long is the delivery time? A3:We will delivery the cargo on the premise of quality guarantee on time according to your quantity.      Q4:How about our inspection? A4: Different products have different ways of inspection.Our inspections have follow types: Material insepction;NDT(UT,MT,RT,PT);Demension inspection;Procession inspection; Assembling inspection;Appearance inspection; Painting inspection...     How to contact us?                                                                      Send your Inquiry Details in the Below, Click "Send" Now!

Contact us if you need more details on Square Tube. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Pipe、Steel Pipe. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Dredging And Marine Parts > Pipe Line

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