1. Multi-storey building fire pipe network settinga. When there are more than 10 indoor fire hydrants and the fire water consumption exceeds 15L/s, the indoor fire water supply pipeline should have at least two water inlet pipes connected to the outdoor pipe network, and the indoor pipes should be l

The processing of the outer anti-corrosion layer of the steel pipe must be strict to the design requirements and relevant national standards. The rust removal must reach Sa2.5 level, and the primer must be applied within 2 hours after the rust removal is completed. Every time a glass cloth is proces

In the production process of stainless steel welded pipe, intermediate heat treatment and finished heat treatment can be carried out. Because a bright surface without oxidation can be obtained, the traditional pickling process is eliminated. The use of this heat treatment process not only improves t

1. During the welding process, the current supplied to the welding torch is too small, and the capacitor time is too short. When the capacitor is not fully welded, the welding surface has hardened, so there are sand grains or air bubbles that have not been fully welded.2. When the strip enters the a

Thick-walled steel pipes have a wide variety of steel types and specifications, and their performance requirements are also various. All of these should be differentiated as user requirements or working conditions change. Generally, steel pipe products are classified according to cross-sectional sha

1: Flange connection:Generally, the flange connection speed is fast, the construction is convenient, and the tools are simple, but in terms of safety and sealing, it cannot meet most engineering requirements. Generally, pipes with low pressure and frequently used pipes are suitable for this connecti

Project Location: Vietnam.Product: ASME B36.10 steel pipe.Specifications:219.1mm*10.31mm*0.7m.Application: Industrial energy construction and transport.Arrival time: 07.15.2022.The steel pipes have arrived in Vietnam and were put into project use. Many cooperations have given the customer full confi

1. The arc starting of the stainless steel pipe fittings adopts the reflow method, and the arc ending adopts the method of full arc crater. In the over-scale of arc starting, it should be completed within the slope, and arcing and arcing should not be performed on the surface of the pipeline and the

1. In the test results of straight seam steel pipes, when a certain item does not meet the requirements of the product standard, the unqualified ones should be picked out, and from the same batch of straight seam steel pipes, double the number of samples should be taken, and the unqualified items sh

1. Thermomechanical treatmentHigh-temperature thermomechanical treatment can improve the yield ratio and elastic limit of the spiral steel pipe. Improve the comprehensive mechanical properties, fatigue properties, and stress relaxation properties of spiral steel pipes. Reducing the ductile-brittle t