Lisa Tan

July 15, 2022

Quality requirements for seamless steel pipes

(1) Quality requirements ①Chemical composition of steel: The chemical composition of steel is one of the most important factors affecting the performance of seamless steel pipes, and it is also the main basis for formulating process parameters for rolling and heat treatment of steel pipes. Alloying elements: intentionally added, according […]
July 5, 2022

Classification, production process and mechanical properties of seamless steel pipes

According to different production methods, it is divided into hot-rolled pipe, cold-rolled pipe, cold-drawn pipe, extruded pipe, pipe jacking, etc., all of which have their own process regulations. The materials are ordinary and high-quality carbon structural steel (Q215-A~Q275-A and 10~50 steel), low alloy steel (09MnV, 16Mn, etc.), alloy steel, stainless […]
June 23, 2022

Basic knowledge and uses of seamless steel pipes, oil casings and pipes

Knowledge of oil casing Basic knowledge Oil casing is a large-diameter pipe that acts to fix the wall or bore of oil and gas oil wells. The casing is inserted into the wellbore and fixed with cement to prevent the wellbore from separating the rock formation and the wellbore from […]
June 17, 2022

Classification and function of casing

Casing Classification and function of casing Casing is the steel pipe that supports the wall of oil and gas wells. Several layers of casing are used for each well according to different drilling depths and geological conditions. Cement cementing should be used after the casing is run down the well. […]
May 31, 2022

Steel pipe cement-soil pile construction method (synthetic steel pipe pile construction method)

This kind of construction method refers to the construction method of burying the steel pipe piles with side protrusions (ribs) in the cement-soil column, and integrating the two to form a composite pile. The so-called cement-soil column is a mixture of cement slurry and soil with a poor mix ratio […]
May 27, 2022

Construction method of middle excavation type steel pipe pile

The middle excavation type steel pipe pile construction method refers to inserting a special drilling rig into the open type steel pipe pile, and pressing the steel pipe pile into the soil with a pressurized jack or a hoist while drilling and taking out soil. 1. Method of pile end […]
May 19, 2022

Examples of steel pipe pile construction methods

4.1 Drum-type diesel hammer impact pile driving method (1) The method of “heavy hammer and low strike” should be adopted for piling. (2) The pile frame generally adopts a 3-point support crawler pile driver. (3) The elevation of the pile top of the steel pipe pile in the piling sequence […]
May 9, 2022

Steel Pipe Piles Overview and Construction Method

1 Overview For more than half a century, steel pipe piles have gradually become one of the main types of piles in foundation engineering. Steel pipe piles are widely used in Shanghai, my country, and some deep-water wharves, Baoshan iron and steel plants, power plants and dozens of high-rise buildings […]
April 25, 2022

Double-layer lined screening pipe&Sand-control screening pipe for oil well

Double-layer lined screening pipe      The double-layer lined screening pipe is composed of a base pipe of API standard, a double-layer high precision wedge wire filter pipe and lined filter material in between.   Characteristics of the product:   1.High-precision screening gap can effectively control sand and act as a […]
April 18, 2022

Hole-drilled pipe&Water filter pipe for geothermal well&Water filter pipe of air-conditioning well

Hole-drilled pipe We supply hole-drilled pipes of various specifications and materials and provide hole-drilling services, and you are welcome to call and inquire us! Diameter of hole-drilled pipe:114mm,127mm,140mm,168mm,178mm,219mm,245mm,273mm,325mm,406mm,426mm,530mm,630mm。 Materials of hole-drilled pipe: Stainless steel, carbon steel, J55,N80,and L80. 2. Water filter pipe for geothermal well           […]
April 12, 2022

Wire-wound water filter pipe

Wire-wound water filter pipe A wire-wound water filter pipe is made by welding wedge winding wire and wedge bar (or round bar) at each crossing point. Characteristics of the product: 1.Wire-wound water filter pipe features firm structure, high porosity and accurate size of gap. It is specially fit for fine […]
April 6, 2022

Basic knowledge of steel pipe varieties and standards

1. Basic knowledge of steel pipe standards 1. Standards: Standards are repetitive things with diversity-related characteristics in economic and technological activities. On the basis of summarizing the comprehensive results of scientific technology and practical experience, they are fully negotiated by relevant parties, and are issued in specific procedures and specific […]
March 29, 2022

Steel pipe standards and basic knowledge

1. Basic knowledge of steel pipe standards 1. Standards: Standards are repetitive things with diversity-related characteristics in economic and technological activities. On the basis of summarizing the comprehensive results of scientific technology and practical experience, they are fully negotiated by relevant parties, and are issued in specific procedures and specific […]
March 8, 2022

Coupling standards and requirements for oil casing

9.1 General requirements Couplings shall be seamless pipes of the same grade, type and heat treatment as pipes, except in the following cases in 9.2. This standard does not require that coupling blanks be cut from coupling stock ordered in accordance with this standard. When couplings are electroplated, the electroplating […]
February 28, 2022

Various test procedure rules for tubing and casing

10.4 Tensile test 10.4.1 Stress release temperature For the purpose of tensile test frequency requirements, stress-relief tempered tubes are considered to have not been “heat-treated” when the stress-relief temperature is 56°C (1000°F) below the final temper temperature. 10.4.2 Furnace—Controlled Tensile Test—Group 1, 2, 3 For each heat of steel produced […]