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 is often buried below the natural ground according to the design. During construction, it can be adopted: @ excavate the soil to the design elevation of the pile top before piling; ② The pile top is driven to the natural ground, and then the pipe is cut To the design […]
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 are all based on steel pipe piles. 2 Advantages and disadvantages of steel pipe piles (1) Advantages: Good driving resistance, that is, it can withstand a strong impact force when it is driven into the soil, has a strong ability to penetrate the hard soil layer, and can effectively drive […]
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 protective medium.     2.The use of double-layer lined screening pipe can reduce diameter of drilling hole, save drilling time, and reduce drilling cost.     3. The use of double-layer lined screening pipe can reduce the workload of operators, and improve the success rate of drilling.     4.Filter material can be […]
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                  A geothermal well filter pipe is composed of a base pipe of API standard and a wire-wound filter pipe of high precision.   Characteristics of the product:   1.It has strong pressure bearing capacity. With the support of the inner-layer base pipe, even if external filter pipe is […]
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 sand and silt strata of wells.   2.The opening area of the wire-wound water filter pipe is large, and its filtration area is high up to 60%.     3.Wedge-shaped design prevents screening pipe from being blocked and makes it easier for backwash.   4. The larger filtration area makes it easier for […]
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 forms. Uniform and guiding regulations that must be complied with within a certain range. 2. Classification of steel pipe product standards: a) According to the promulgating agency, it is divided into: national standard (GB or GB/T), industry standard (such as YB or YB/T), enterprise standard (Henggang enterprise standard code is […]
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 forms. Uniform and guiding regulations that must be complied with within a certain range. 2. Classification of steel pipe product standards: a) According to the promulgating agency, it is divided into: national standard (GB or GB/T), industry standard (such as YB or YB/T), enterprise standard (Henggang enterprise standard code is […]
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 process is controlled to minimize hydrogen absorption. 9.2 Grade substitution or heat treatment 9.2.1 If no heat treatment is specified in the order, Grade H40 pipe may be supplied with Couplings of Grade H40, J55, or K55 rolled, normalized, normalized + tempered, or quenched + tempered. 9.2.3 If no heat […]
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 in accordance with this standard, the manufacturer shall conduct a tensile test as a control test for each heat of steel. For electric welded pipes, this controlled tensile test may be selected by the manufacturer, or be carried out on the steel billet or on finished tubes. A furnace-controlled tensile […]
February 26, 2022

Construction scaffolding steel pipe specification table

1. Specifications of scaffolding steel pipes: diameters are Φ3.0, Φ2.75, Φ3.25, Φ2.5; lengths are generally 1-6 meters and half a meter, and can be processed according to customer requirements. 2. The implementation standard of scaffolding steel pipe: SY/T5768-95 GB/T3091-2001. 3. The material of scaffolding steel pipe: Q195, Q215 or Q235. Extended information Types of Fastener 1. Advantages 1) The bearing capacity is large. When the geometric size and structure of the scaffold meet the relevant requirements of the specification, under normal circumstances, the bearing capacity of the single-tube column of the scaffold can reach 15kN ~ 35kN (1.5tf ~ 3.5tf, […]