LSAW steel pipe external coating

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Product Description:

Specifications

water pipeline inner-layer tape
1 Butyl rubber as adhesive
2. SGS test report and DVGW certificate
3. corrosion protection

   

water pipeline inner-layer tape

State-of-the-Art Pipeline Protection for All Climates & Environments

System description:

WATER PIPELINE Inner -layer tape also be called pipe wrap anti-corrosion tape, polyethylene wrap tape.

water pipeline Inner-layer tapeT100 is engineered to assure a high bond to the primed pipe surface with excellent conformability characteristics, aggressive adhesive for corrosion protection and repair of main line coatings.

Inner-layer tapeT100 series is cold applied tape coating system for corrosion protection of Oil, Gas, Petrochemical, and Waste Waterburied pipeline, pipe can be buried, also can be underground ,overhead ,onshore and offshore .

Structure of water pipeline inner wrap tape
The specification of the tape consists of two layers, adhesive layer and film backing
Adhesive: butyl rubber
Film backing: Special blend of stabilized polyethylene

Features & Benefits

  • Provides a permanent bond to the primed steel pipes surface and provides protection against chemical electrolytic corrosion for underground pipelines.

  • long term corrosion protection

  • Worldwide reference lists. Established in-ground history

  • High chemical resistance under service temperature.

  • Outstanding electric property and permanent adhesion.

  • Cold applied, No release liner. Makes installation fast and easy.

  • Complies with EN-DIN 30672 and AWWAC-214 international standards and also ASTM standards.

  • Be used for water pipeline corrosion protection

System Properties

Type

T138

T 150

T165

T180

T 250

T265

T280

Thickness

15mil

0.38mm

20mil

0.508mm

25mil

0.635mm

30mil

0.762mm

20mil

0.508mm

25mil

0.635mm

30mil

0.762mm

Backing

9mil

0.229mm

9mil

0.241mm

10mil

0.25mm

10mil

0.25mm

15mil

0.38mm

20mil

0.508mm

25mil

0635mm

Adhesive

6mil

0.152mm

11mil

0.279mm

15mil

0.381mm

20mil

0.508mm

5mil

0.127mm

5mil

0.127mm

5mil

0.127mm

When used for ductile iron pipes inner layer 980-20 or 980-25 and outer layer 955-20 or 955-25 are recommended.

Elongation

³300%

³400%

Tensile Strength

55 N/cm

70 N/cm

Color

Black

White

Peel Adhesion to Primed Pipe

33 N/cm

Dielectric Strength

30 KV

Dielectric Breakdown

26 KV/mm

Cathodic Disbandment

0.24 in radius 6.4 mm

Water Vapor Transmission Rate

< 0.1%

Volume Resistivity

2.5 x 1015 ohm.cm

Impact resistance

5.5Nm

Penetration Resistance

<15%

Performance

AWWA C-209,ASTM D 1000,EN 12068

Order information

Length

100ft(30 M),200ft(60 M),400ft(120 M),800ft(240 M)

Width

2’’(50mm),4’’(100mm),6’’(150mm),17’(450mm),32’’(800mm)

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Q:Is the diameter of the steel tube indicated by the outer diameter by the wall thickness or by the inside diameter by the wall thickness?
For seamless steel pipes or nonferrous metal pipes, the outer diameter * wall thickness shall be marked".For example, 108 x 4 phi, Phi can be omitted. Some steel tubes in China, ISO and Japan adopt wall thickness to indicate the thickness of steel pipe. The method for the specification of such steel tubes is pipe outer diameter * wall thickness. For example, Phi 60.5 * 3.8.
Q:What is the production process of seamless steel tube?
The main production process for hot rolling seamless steel tube (the main inspection):Tube preparation and check delta to billet heating, heating, rolling, perforated pipe, steel pipe and heat treatment, diameter (minus) Delta to finished tube straightening, finishing and inspection of delta (nondestructive, physicochemical, Taiwan inspection and warehousing)
Q:What kinds of steel pipe are divided into?
Welded pipe: also known as welded pipe, is made of steel or steel strip after bending forming, and then made by welding. In accordance with the form of weld is divided into longitudinal welded pipe and spiral welded pipeSpecifically refers to the use of welded steel strip or plate bending deformation of round, square shape after welded, surface jointed steel pipe. The welding steel billets is used in steel plate or strip. The welded pipe production process simple, high production efficiency, great variety, less capital equipment, but since the general strength is less than that of seamless steel.20 century 30s, along with the rapid development of high-quality strip rolling production and progress of welding and testing technology, and constantly improve the weld quality, varieties and specifications of welded steel pipe is increasing, and instead of the seamless steel pipe in more and more fields. Compared with welded steel seamless steel tube with low cost and high production efficiency.
Q:Is there any difference between thermal expansion seamless steel pipe and seamless steel pipe?
One is thermal expansion on a bar, that is, piercing between the bars and expanding the tube with a little bit of mandrel. The other is to expand the formed tube before it is heated so that the defects in the pipe will be enlarged. Comparatively speaking, the quality of the first kind is better than the second, and you should belong to the second kind. Compared with the original seamless seamless tube, the quality and chemical properties are certainly different. The price will be cheaper, too.
Q:Difference between cold rolled steel pipe and common steel pipe
From the above point of view, the hot rolled steel pipe used in fluid transport, mechanical structure and other requirements of the size of the situation is not high, cold-rolled steel pipe used in precision instruments, hydraulic systems, pneumatic and other places demanding.
Q:Material of welded steel pipe
GB/T14980-1994 (large diameter welded pipe for low pressure fluid delivery). Mainly used to transport water, sewage, gas, air, heating, steam and other low-pressure fluid and other uses. Its representative material is Q235 grade a steel.GB/T12770-1991 (stainless steel welded pipe for mechanical structure). Mainly used in machinery, automobiles, bicycles, furniture, hotels and restaurants, decorations and other mechanical parts and structures. Its representative material 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb and so on.
Q:What's the actual size of the DN25?
DN25 refers to the theoretical size of the inner hole of the pipe. That is to say, the theoretical dimension of the inner diameter of the pipe is 25 (the metric tube refers to the inner diameter, and the English tube is also to indicate the inner diameter, for example: 3/8, the inner diameter is 9.525, and the diameter of the 1/2 is 12.7, and the diameter of the 5/8 is 15.875). The outer diameter is theoretical in diameter, plus the wall thickness specified by the state (which is artificially specified and has no formula)The theoretical diameter of DN25 is 25, and the outer diameter is Phi 33.7 and phi 32(but there is also the outside diameter of the mark. The mark is: the outer diameter * wall thickness, such as: 32 * 2, that is to say, the outer diameter is 30, the inner diameter is 26)
Q:Welded and seamless steel pipe how to distinguish?
Different processing technology:Seamless tubes are made of quality carbon steel or alloy steel. Processing technology of seamless pipe hot rolling and cold drawing is divided into two ways, and the tube is generally based on welded.
Q:What is DN50 for welded pipe?
Refers to the use of welded steel pipe made of DN50 steel pipe, refers to the inside diameter is 50mm, the market of common DN50 pipe also refers to the 2 inch pipe, standard pipe: 3.5mm thickness, pipe diameter 60mm, the weight of 4.88kg/m theory.
Q:How many fasteners are there in a ton of steel tubes?
The fastener generally refers to the intermediate connecting parts connecting two members, in the construction project for external diameter of steel pipe scaffold with 48mm fixation, the fastener is divided into rectangular fastener (cross directional fastener fastener) rotary fastener (universal movable fastener fastener) (a direct docking fastener fastener fastener) etc..

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