Important components of alloy steel and thick parts must be preheated before welding.The purpose of spiral steel pipe preheating before welding is as follows:(1) Preheating can slow down the cooling rate after welding so that hydrogen diffuses in the weld metal and escapes to avoid cracking caused b
The construction of cement mortar fabric should usually be carried out after the spiral steel pipe is laid, the pressure test is qualified, and the soil is compacted according to the planning requirements. Due to the small rigidity and thin wall of the steel pipe, the pipeline must be in a stable st
Welding and cutting of the spiral steel pipe structure are inevitable in the application of the spiral steel pipe. Because of the characteristics of the spiral steel pipe itself, compared with ordinary carbon steel, the welding and cutting of the spiral steel pipe have its particularity, and it is e
Product name: Galvanized steel pipeMaterial: Carbon steelSize: 100*2*6000mmStandard: API 5LQuantity: 2000 tonsMany cooperations have given the customer full confidence in THREEWAY STEEL.
First, safety precautions1. It is strictly forbidden to stand under the primary straight-through valve of the steam boiler pipeline drain. 2. There is no one within 1 meter in the diameter of the outlet of the drainpipe at each drain point. 3. There is no one within 50 meters of the outlet direction
①Advantages of material propertiesAs the name suggests, stainless steel pipe is made of stainless steel. The strength of stainless steel is 3 times that of copper pipe and 8 to 10 times that of PPR pipe. on the hot water pipe. At the same time, the stainless steel material has no exudate and can ach
Introduction of the high-frequency welding process of submerged arc steel pipe:1. Control of weld gap: After rolling by multiple rollers, the strip is sent to the welded pipe unit. The strip steel is gradually rolled up to form a circular tube blank with an opening gap, and the reduced amount of the
As an efficient special means of transportation, pipeline transportation has played an increasingly important role in the fields of oil and natural gas transportation. At present, domestic large-diameter transportation pipelines are mainly constructed with spiral welded pipes. To ensure the reliable
Product name: Galvanized steel pipeMaterial: Carbon steelSize: 85x4x6000mmStandard: ASTM A53Quantity: 4000 tonsMany cooperations have given the customer full confidence in THREEWAY STEEL.
