Seamless Steel Tube Billet Heating Quality Requirements

amless tube billet heating requirement as follow:(1) should be based on the rolling conditions, at any time adjust the temperature of the tube billet heating.The Tube billet is required to heat evenly...

Test Method For Casing And Tubing Thread

The inspection of oil pipe thread is more complicated, which is divided into coupling thread inspection and pipe body thread inspection.1 Coupling thread InspectionAfter the thread is machined, the si...

The Basic Principle Of Steel Billet Heating

In the steel tube production, the steel billet heating process is actually heat transfer process, temperature difference is the basic condition of heat transfer, there is temperature difference will ...

Heat Treatment Defects Of Steel Tube And Its Prevention

Heat treatment of metal materials is divided into whole heat treatment, surface heat treatment and chemical heat treatment. Heat treatment of steel tube generally adopts whole heat treatment. General...

Formation Of Weld Heat Affected Zone On Welded Steel Pipes

Welding is a local rapid heating and cooling process of the heat cycle on welded steel pipes, the heating process causes the metal to melt rapidly into the weld area, and the parent material close to ...

On-Line Noramlizing Process Of Seamless Steel Pipe

On-line normalizing is a kind of heat treatment technology developed in recent years, that is also called deformation normalizing. It is the seamless steel pipe just rolling the continuous rolling mi...

Several Aspects For Seamless Steel Tube Quality

1) Chemical compositionThe requirements for the content of hazardous chemical elements such as As Sn Sb Bi Pb and gas N,H,O are proposed, in order to improve the uniformity of chemical composition and...

Introduction To The Straightening Of Seamless Steel Tube

Almost all seamless steel tubes require straightening at some point in their production process, regardless of the production process, such as drawing, extrusion, hot rolling, or any other process.The...

Overview Of Groove Connections

Groove machining 1) Check the size, roundness and manufacturing quality of the nozzle to meet the requirements of groove production;2) Process the groove in different stages according to the specified...

The Features And Heat Treatment Technology Of Seamless Precision Steel Tube

1. Smaller outside diameter2. High precision can be done in small batches.3. High precision and good surface quality of cold-drawn products.4. The cross area of steel pipe is more complicated.5. Steel...

Introduction To Flange Pressure Classes

Is There A Pressure Class For The Flange? Answer: Yes! Let's Take A Look At The Pressure Class Of Flange:According to ASME B16.5, steel flanges are available in 7 pressure classes: Class150-300-40...

Common Defects And Countermeasures Of Heat Treatment

Hardness disqualificationUnqualified hardness is one of the most common defects of heat treatment. It is mainly caused by insufficient hardness, insufficient quenching cooling speed, surface decarboni...

Corrosion Performance Of Welded Steel Pipe

The high corrosion resistance in the acidic environment of the T-tube welded steel pipe in the environment with sulfuric acid or hydrochloric acid, the higher the content of NI is, the stronger the co...

Main Production Standards And Delivery Status Of Precision Steel Tubes

Main production standards and delivery status of precision steel tubesPrecision bright tube (precision steel tube) is a kind of common seamless steel tube (or de-diameter welded steel tube) through f...

Classification Of Steel Pipes

All the two ends of the opening and hollow section, and its length and section circumference of the larger comparison of steel, can be called steel pipe.Steel pipe is a kind of economic steel, is an ...

Hot Rolled Steel Pipe Production Process

General process flowThe production process of hot rolled seamless steel pipe includes several basic processes, such as preparation of billet before rolling, heating of tube billet, perforation, rolli...

Magnetic Particle Inspection Of Forged Steel Parts

1) Characteristics of flaw detection of forged steel parts: forging processing forming methods are generally divided into two categories: free forging and die forging. Its technological process is: b...

Material Properties (Elastic Coefficient, Thermal Coefficient, Thermal Fatigue) In Relation To Temperature

There are two types of material coefficient related to temperature: one is the material coefficient related to mechanical properties of materials; The other is the material coefficient related to heat...

Comparison Of Burning Loss For Heated Seamless Steel Tube In Annular Furnace And Step Furnace

The burning loss of the heating seamless pipe in annular furnace and step furnace is different.In terms of heating time, the step beam furnace heating time is shorter than the annular furnace, so it ...

Brief Introduction Of Steel Continuous Casting Production Process

Steel continuous casting is the process of transforming molten steel into steel billet. After the upstream treatment, the molten steel is transported to the turntable in a steel bucket, which is divi...