June 30, 2021

Definition of casing pipe

A bushing is an insulating device that carries a live conductor into electrical equipment or through walls.The former is called electrical bushing and the latter is called wall bushing.The casing structure is generally composed of three parts: conductor (guide rod), insulator and metal flange.Conductors pass through the shaft of cylindrical […]
Do you like it?0
Read more
July 6, 2021

Seamless tube market trend from what factors analysis

1. Market: At present, the local seamless pipe market price is low, the shipment is still weak, the demand support is weak, and the market atmosphere is not good;Periphery market turnover is generally dismal, Xi ‘an, Jinan, Baotou, Shenyang, Hangzhou, Nanjing, Cangzhou, Wuxi, Harbin and other places prices are mainly […]
Do you like it?0
Read more
July 13, 2021

The advantage of the ERW

First of all, the quality of raw materials used in ERW production has been significantly improved. The steel composition design is low in C, P, S and microalloying.The adoption of new technologies such as converter smelting, ladle refining, vacuum degassing and continuous casting in the smelting process;The appearance size, appearance […]
Do you like it?0
Read more
July 22, 2021

Henan heavy rain steel shipments affected

Rain, rain, rain…In recent days, the torrential rain in Henan province has been increasing, zhengzhou just three days, within an hour almost the whole year rainfall, the maximum rainfall reached 100 West Lake water, roads, subway flooded, mountain floods, mudslides occurred from time to time, the road traffic was interrupted.Steel […]
Do you like it?0
Read more
July 28, 2021

API screwed steel pipe advantages and disadvantages

The advantages of API standard threads are: 1) Easy to process, general precision, easy to process and connect the related sub on the field, low cost.2) The connection under general operating conditions is easy to repair and handle on site. 3) When used with high quality sealing grease, the fluid […]
Do you like it?0
Read more
August 25, 2021

Technical requirements for hot-dip galvanized steel tubes

Hot-dip galvanizing is to pickle the steel pipe first. In order to remove the iron oxide on the surface of the steel pipe, after the pickling, it is cleaned in a tank of ammonium chloride or zinc chloride aqueous solution or a mixed aqueous solution of ammonium chloride and zinc […]
Do you like it?0
Read more
August 30, 2021

Steel market “Golden Nine” peak season is approaching, the market bottoming out and rebounding soon?

The recent analysis of the monetary and credit situation by relevant financial institutions believes that domestic economic recovery still needs to maintain stable credit growth, moderate monetary growth should support high-quality economic development, help small and medium-sized enterprises and difficult industries continue to recover, and serve the revitalization of rural […]
Do you like it?0
Read more
September 8, 2021

Damage and repair of oil and gas well casing

Oil casing is the lifeline to maintain the operation of oil wells. Due to different geological conditions, the downhole stress state is complex, and the combined action of tensile, compressive, bending and torsion stresses on the pipe body, which puts forward higher requirements on the quality of the casing itself. […]
Do you like it?0
Read more
September 15, 2021

The steel market soars by 600, and the rhythm changes. pay attention to heavy data

Last week, the domestic futures market prices accelerated, especially the rapid performance of the futures market, with the highest price increase of nearly 600 yuan at one time!   Among them, under the blessing of production restriction and safety production and other favorable factors, Bijiao has repeatedly set record highs, […]
Do you like it?0
Read more
September 22, 2021

The manufacturing process and popularization and application of thick-walled pipe

Hot rolled (Extruded seamless steel pipe): round tube billet → heating → piercing → three-roll cross rolling, continuous rolling or extrusion → stripping → sizing (or reducing) → cooling → straightening → hydraulic test (or flaw detection) →Marking→Warehousing The raw material for rolling seamless pipes is round pipe blanks. The […]
Do you like it?0
Read more
September 30, 2021

Common quality problems of steel pipes

The common quality problems of steel pipes are divided into the following categories: 1. The internal and external quality of steel pipes; 2. Quality problems of geometric dimensions; 3. Unqualified quality problems of physical and chemical properties; 4. Quality problems of tubing and casing threads; 5. Quality problems of users […]
Do you like it?0
Read more
October 8, 2021

After-sales service of steel pipe products

After-sales service is not only dealing with the quality of the products sold, but also includes technical exchanges with customers, providing customers with technical support, and quality visits to expand the impact on the company’s products and achieve the expectation of opening up the market and occupying the market. Handling […]
Do you like it?0
Read more
October 15, 2021

General term for steel pipe

General term 　　①Delivery status 　　 refers to the final plastic deformation or final heat treatment state of the delivered product. Generally, those delivered without heat treatment are called hot-rolled or cold-drawn (rolled) state or manufacturing state; those delivered after heat treatment are called heat-treated state, or normalized (normalized), quenched and […]
Do you like it?0
Read more
October 20, 2021

Various common terms about steel

1. Standard Standards are unified regulations for repetitive things and concepts. It is based on the comprehensive results of science, technology, and practical experience, and is agreed upon by relevant parties, approved by the competent authority, and issued in a specific form as a standard and basis for mutual compliance. […]
Do you like it?0
Read more
October 26, 2021

45# seamless steel pipe

Production process of 45# seamless steel pipe The production process of 45# seamless steel pipe includes billet preparation before rolling, pipe billet heating, piercing, rolling, sizing and reduction, steel pipe cooling, steel pipe cutting head and tail, segmentation, straightening, flaw detection, manual inspection, and printing. , Bundle packaging and other […]
Do you like it?0
Read more
November 2, 2021

The difference between ERW, SSAW, LSAW

The production methods of seamless steel pipes are roughly divided into cross-rolling method (Mennesmann method) and extrusion method. The cross-rolling method (Mennesmann method) is to first pierce the tube blank with a cross-rolling roller, and then extend it with a rolling mill. This method has a fast production speed, but […]
Do you like it?0
Read more
November 8, 2021

Basic knowledge about oil pipeline

Basic knowledge about oil pipeline 1. Explanation of special terms related to petroleum pipeline API: It is the abbreviation of American Petroleum Institute in English, and Chinese means American Petroleum Institute. OCTG: It is the abbreviation of Oil Country Tubular Goods in English, which means special oil pipes in Chinese, […]
Do you like it?0
Read more
November 16, 2021

Introduction to basic knowledge of alloy structural steel

In addition to iron and carbon, steel is called alloy steel by adding other alloying elements. An iron-carbon alloy formed by adding an appropriate amount of one or more alloying elements on the basis of ordinary carbon steel. According to the different added elements and adopting appropriate processing technology, special […]
Do you like it?0
Read more
November 24, 2021

What factors affect the performance of galvanized steel pipe

Galvanized steel pipes are welded steel pipes with a hot-dip galvanized or electro-galvanized layer on the surface. Galvanizing can increase the corrosion resistance of the steel pipe and prolong the service life. Galvanized pipe has a wide range of uses. In addition to line pipes for conveying water, gas, oil […]
Do you like it?0
Read more
December 2, 2021

Terms, definitions, symbols and abbreviations for tubing and casing

Terms, definitions, symbols and abbreviations 1.1 Terms and definitions This International Standard adopts the terms and definitions listed in the heat treatment operation section of ASTM A941 and below. 1.1.1 accessory material Seamless standard casing or oil pipe, seamless thick-walled pipe or mechanical pipe, bar material or hot forged material […]
Do you like it?0
Read more
December 8, 2021

Knowledge and understanding of carbon steel pipes

Carbon steel pipe is made of steel ingots or solid round steel through perforation into capillary tube, and then made by hot rolling, cold rolling or cold drawing. Carbon steel pipe has an important position in my country’s steel pipe industry. General carbon steel pipe: It is made of 10, […]
Do you like it?0
Read more
December 13, 2021

Detailed introduction of 16Mn seamless pipe

16Mn seamless steel pipe is a relatively important material for seamless steel pipe, and it is also a relatively useful steel. Recently, especially in capital construction pipelines, houses, and railway bridges, it has given full play to a relatively huge effect. Generally, the original factory paints the color code on […]
Do you like it?0
Read more
December 21, 2021

Tubing coupling requirements

The coupling should be a seamless pipe, and its steel grade, type and heat treatment should be the same as that of the pipe. When the coupling is electroplated, the electroplating process should be controlled to minimize hydrogen absorption. The structure of the tubing coupling is: the end of the […]
Do you like it?0
Read more
December 29, 2021

Detailed explanation of Pipe and Tube

PIPE is a circular section tube conforming to ASME B36.10M and ASME B36.19M. There are some special PIPEs that do not meet the dimensions in these tables, as well as circular tubes. The nominal outer diameter corresponds to the actual outer diameter. A TUBE is a hollow object with a […]
Do you like it?0
Read more
January 4, 2022

Inspection test of tubing and casing

Inspection, test Test equipment In order to ensure that all products meet the requirements of this standard, the manufacturer shall determine the appropriate calibration frequency for the test equipment. If the equipment required to be calibrated or verified in accordance with the provisions of this standard is in an abnormal […]
Do you like it?1
Read more
January 12, 2022

Various inspection methods of oil casing

Petroleum casing is a high-end product produced by steel pipes. There are many varieties of casing, and there are many types and requirements of casing pipe end buttons. The button types that can be processed include STC, LC, BC,and other button types. The production and installation process of oil casing […]
Do you like it?0
Read more
January 24, 2022

Mechanical properties of steel pipes

The mechanical properties of steel are important indicators to ensure the end-use properties (mechanical properties) of steel, which depend on the chemical composition and heat treatment system of the steel. In the steel pipe standard, according to different use requirements, the tensile properties (tensile strength, yield strength or yield point, […]
Do you like it?0
Read more
February 8, 2022

Introduction to the knowledge of seamless steel pipes and welded pipes

Seamless steel pipes are widely used. The general-purpose seamless steel pipe is rolled from ordinary carbon structural steel, low-alloy structural steel or alloy structural steel. .2. According to different uses, it is divided into three categories: a. According to chemical composition and mechanical properties; b. According to mechanical properties; C. […]
Do you like it?0
Read more
February 14, 2022

Drill pipe related terms and symbols analysis

bevel diameter Rotary shoulder connection seals the outer diameter of the shoulder. defect Defects of sufficient size are the basis for product rejection in accordance with the guidelines set forth in this International Standard. drill pipe Drill pipe body with butt welded joints. drill pipe body There are seamless steel […]
Do you like it?0
Read more
February 22, 2022

Detailed explanation of tubing and casing markings

11 mark 11.1 General 11.1.1 Products manufactured in accordance with this specification shall be marked by the manufacturer in accordance with this specification. 11.1.2 For all manufacturers except threaders, the marking rules in Chapter 11 except 11.6 apply, and for threaders the marking rules in 11.5 and 11.6 and Table […]
Do you like it?0
Read more
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. […]
Do you like it?0
Read more
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 […]
Do you like it?0
Read more
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 […]
Do you like it?0
Read more
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 […]
Do you like it?0
Read more
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 […]
Do you like it?0
Read more
April 18, 2022

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

Hole-drilled pipeWe 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 […]
Do you like it?0
Read more
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 […]
Do you like it?0
Read more
May 9, 2022
astm a252 welded steel pipe piles

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 […]
Do you like it?0
Read more
May 19, 2022
saw-pile-pipe-astm-a252-grade-3

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 […]
Do you like it?0
Read more
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. […]
Do you like it?0
Read more
June 20, 2022

Welded vs. Seamless Production in the Tube-Making Process

Welded vs. Seamless Production in the Tube-Making Process Steel tubes, from automobile manufacturing to gas pipes, can be either welded from alloys – metals made from different chemical elements – or constructed seamlessly from a melting furnace. While welded tubes are forced together through methods such as heating and cooling and […]
Do you like it?0
Read more
June 21, 2022

How wear occurs in pipes and why high-strength wear-resistant steel outperforms regular steel pipe in abrasive environments

  In transportation systems that use pipes, wear occurs when hard particles or abrasive slurry particles slide along or are forced against the pipe walls. This action on the pipe wall can lead to loss of material and, in extreme cases, leakage or failure of the pipe. Ordinary steel pipes […]
Do you like it?0
Read more
June 21, 2022

Seamless Steel Pipe Wall Thickness Variation Control Technology

Reducing the amount of variation, or achieving more wall thickness consistency, can be the difference between meeting a customer’s requirements or not. It also helps to reduce or even may eliminate the customer’s need for subsequent processes such as machining. Seamless tube typically is manufactured on a two-roll piercer mill. […]
Do you like it?0
Read more
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 […]
Do you like it?0
Read more
12345