Thermally
insulated steel pipelines are extremely important for oil and gas
industry. Steel pipelines, which lie buried for hundreds of years, has
extraordinary properties including excellent stress crack resistance to
natural gas and its contaminants, low permeation to methane and
hydrogen, high HDB rating at 20°C, 60°C and 80°C,
superior impact resistance, squeeze off, and dependable UV performance
for outside storage. The insulation material is usually polyurethane
foam (PU), which has high thermal efficiency and is mechanically strong.
Small, medium and large diameter pipes are available and the high
strength of steel also makes bending and forming more difficult.
Generally, Electric Resistance Welded (E.R.W.) steel Pipe are used for
oil and gas processing and transmission lines registered and assures
consistent quality in its application. These are equally good in hot or
wet applications such as river crossings and rough terrain. The use of
steel provides standard for pipe suitable for use in conveying gas,
water and oil in both the oil and natural gas industries.
