Heat-shrinkable diameter steel pipe production technology development began in the early nineteenth century oil development in the rise of the bicycle manufacturing industry, during the two world wars, ships, boilers, aircraft manufacturing after World War II thermal power boiler manufacturing, chemical industry development and oil and gas drilling and transportation, a strong impetus to the development of the steel industry in the varieties, yield and quality.

Straight seam submerged arc welded steel pipe used for the submerged arc welding process technology, the use of filler welding, submerged arc flux particle protection.

When crises break between austenite no metal precipitation, molybdenum has little effect on the mechanical properties at room temperature.

Straight seam steel pipe expanding is a process that a use of hydraulic or mechanical means forcing the steel pipe from the pipe wall bulged outward along the radial pressure molding process.

Pipe cap is widely used in nuclear power, chemical, food, pharmaceutical and other industries, the head of pressure vessel is a mechanical element, element is under pressure.

The aim of the present work is to quantify the seam weld properties, including both weld metal and heat affected zone regions, for a series of double-submerged-arc welded pipe, and the base metal and bondline regions for an electrical resistance welded line pipe steel. The chemical composition, micro structure, microhardness, tensile properties, Charpy impact toughness and J-integral/crack-tip opening displacement fracture resistance were characterized for linepipe produced between 1953 and 1981.

Spiral pipe manufacturers adopt advanced double submerged arc production process, easy to control weld quality and welding position can be achieved in the best position, not prone to the wrong side, partial and incomplete penetration welding defects.

LSAW steel pipe was invented in 1940, a new welding method, welding hand in front of it and the same place it is to protect the use of slag, but this residue is not a skin electrode medicine.

Stainless steel is 100% recyclable. An average stainless steel object is composed of about 60% recycled material of which approximately 40% originates from end-of-life products and about 60% comes from manufacturing processes.

High-pressure steel pipe rolling, pipe sizing, reducing steel pipe, steel pipe finishing and cooling or heating can be said Billet piercing heat tie pickling cold drawn carbon burning cutting head spray subscript finished packing one kind of seamless steel pipe manufacturing method characterized by: setting a plurality of rolling stands having rolls to the rolling direction of mutually different configuration of multiple continuous mandrel mill, in such a manufacturing line to be rolled seamless steel pipe both end positions after each axis system, measuring pipe circumferential direction after rolling on the multi-point, according to the measurement results, at least control the mandrel mill the final rolling mill roll base , so uneven wall thickness to a minimum.

Scaffolding, also called scaffold or staging,is a temporary structure used to support a work crew and materials to aid in the construction, maintenance and repair of buildings, bridges and all other man made structures. Scaffolding is also used in adapted forms for formwork and shoring, grandstand seating, concert stages, access/viewing towers, exhibition stands, ski ramps, half pipes and art projects.

ASME B36.10M-2004 Standard covers the standardization of dimensions of welded and seamless wrought steel pipe for high or low temperatures and pressures. The word pipe is used, as distinguished from tube, to apply to tubular products of dimensions commonly used for pipeline and piping systems. Pipe NPS 12 (DN 300) and smaller have outside diameters numerically larger than their corresponding sizes. In contrast, the outside diameters of tubes are numerically identical to the size number for all sizes.