Bitumen anticorrosion for field joint coating steel pipe

t is used for steel pipe for surface Corrosion Protection Tape.
ISO 9001, ISO 14001
ASTM D 1000
SGS test report

I Product Introduction

Adhesive: Butyl rubber

Film: PE basic material.

The product, safe and clean, performs well in insulation, anticorrosion, mechanical strength and anticollision, moreover it is of low water absorption, long service life, wide usage and convenient in application. It is extensively used in the pipework of oil,water and natural gas transportation, petrochemical industry, electric power, metallurgy, urban natural gas network of pipes, the outside anticorrosion project of the metal pipes involved as well as the outside anticorrosion project of the underground and overhead metallic conduit of the works of petrochemical industry, natural gas and coal transportation.

II Features

Long term corrosion protection and mechanical resistance

Outstanding electric property and permanent adhesion

Excellent weather & cold resistance

High chemical resistance under bad condition of soil

Excellent working efficiency by hand or machine

Wide range of application and service temperature

Inner layer tape XUNDA T-150

Order	Item		Unit	Test Value
1	Color		Black ot white
2	Total thickness		mil	20
3	Tensile Strength		N/cm	≥35 width
4	Elongation		%	≥300
5	Tear Strength		N/cm	≥30
6	Peel Adhesion	To Tape	N/cm	≥30
		To prepared steel		≥25
7	Dielectric Strength		kv/mm	≥40
8	Volume Resistivity		Ω.m	≥1x1012
9	Water Vapor Transmission Rate (24h)		g/m2	≤0.1
10	UV Resistance 600h		%	≥80
11	Application Temperature
12	Max Temperatur

Application

1 Rust Removal

Steel Surface needs treating. Its quality shall reach Sa2 or St3 grade as prescribed in GB8923-88 Pre-paint Steel Surface Rust Grade and Rust-removal Grade, and it shall be dust-free.

2 Priming

Primer shall be stirred well before painting. An even film of primer is painted on the steel surface that is rust-removed completely and dust-free. After the primer dries up (one may feel no sticky). The steel pipe can be wrapping with tape (it usually takes 3 to 5 minutes). The primer dosage usually amounts to 80 to 100g / m².

3 Inner Tape (Anti Corrosion Tape) & Outer Tape (Protection Tape) Wrapping

The steel pipe that is painted with primer is wrapping with tape by means of suitable devices or tools as per joint needs, and wraps the inner tape and then wraps the outer tape. Tape tensibility can be 10 to 20 N / cm. The overlapped length between beginning and end of an adhesive tape shall be no less than 1/4 circumference of the steel pipe and the total length of adhesive tape shall be no less than 100mm. each film shall be paralleled, and must not be twisted and rumpled.

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Product Categories : Anticorrosion Pipe Wrap Tape > Anticorrosion Outer Tape