Common pipeline
January 12, 2019
这是一个§371国际应用程序没有。个人电脑T/ JP2008/070726, with an international filing date of Nov. 7, 2008 (WO 2009/061006 Al, published May 14,2009), which is based on Japanese Patent Application No. 2007-290220, filed Nov. 7,2007, the subject matter of which is incorporated by reference. TECHNICAL FIELD This disclosure relates to a high-strength steel plate for line pipes, which is used for transportation of crude oil, natural gas or the like and which is excellent in anti hydrogen induced cracking (hereinafter referred to as HIC resistance), and to a steel pipe for line pipes produced by the use of […]
January 7, 2019
文摘enamel-coate的腐蚀抗性d steel pipe in 3.5 wt% NaCl solution was evaluated and compared with those of epoxy-coated pipe using open-circuit potential, linear po- larization resistance, and electrochemical impedance spectros- copy tests. T-001c enamel slurry and GP2118 enamel powder were sprayed to steel pipe in wet and electrostatic processes, respectively. The phase composition and microstructures of the two enamels were characterized with x-ray diffraction and scanning electron microscopy (SEM). The surface roughness of enamels and their bond strength with steel substrates were quantified to understand coating quality. SEM images revealed that both types of enamel coatings have […]
December 29, 2018
Schedule of Requirements IFT NO. PD.2312/397-MECD/MEZ/PIPE.Materials: Line Pipe. Item No. Description of Goods Qnty Unit A. Line Pipe. As per detailed technical specifications at Section 7. Size and quantity are as follows: A.1 DN 20″ x WT 7.9 mm API 5L Grade B, ERW 450 Meter. A.2 DN 16″ x WT 7.9 mm API 5L Grade B, ERW 5,600 Meter. Technical Specifications IFT NO. PD.2312/397-MECD/MEZ/PIPE. API 5L Grade-B ERW Line Pipe 20″DN (508.0 mm)×WT 7.9 mm This Specification covers the manufacturer, acceptance and delivery of steel pipes with Electric Resistance Welded Longitudinal seam for gas line pipe. Said […]
November 28, 2018
API 5L, ASTM A53, ASTM A106 Gr. B seamless carbon steel tube / pipe is often used worldwide for general delivery purpose and supplied based on sizes in ASME B36.10M. The pipes are frequently ordered as follows: Chemical compositions C Si Mn P S 0.17%-0.23% 0.17%-0.37% 0.35%-0.65% ≤0.03% ≤0.03% Cr Ni Cu ≤0.25% ≤0.30% ≤0.25% Mechanical properties Yield strength Tensile strength ≥245 MPa ≥415 MPa Outside diameter (OD) NPS 1/4-26 (0.54”-26”, 13.7mm-660mm) Wall thickness (WT) SCH20, SCH30, SCH40, STD, SCH60, XS, SCH80, SCH120, SCH160, XXS etc. Pipe length 5.8 / 6 meters, 11.8 […]
November 7, 2018
ASTM A53 covers seamless and welded black and hot-dipped galvanized steel pipe. The pipes are frequently ordered as follows: Type Black, HDG Manufacturing SMLS, ERW Grade A B Chemical compositions C Mn P S ≤0.25% ≤0.95% ≤0.05% ≤0.045% Cu Ni Cr Mo ≤0.4% ≤0.4% ≤0.4% ≤0.15% V ≤0.08% C Mn P S ≤0.3% ≤1.2% ≤0.05% ≤0.045% Cu Ni Cr Mo ≤0.4% ≤0.4% ≤0.4% ≤0.15% V ≤0.08% Mechanical properties Yield strength Tensile strength ≥205 MPa ≥330 MPa Yield strength Tensile strength ≥240 MPa ≥415 MPa […]
November 5, 2018
Polyurethane foam insulation seamless steel pipe The polyurethane direct buried heat preservation pipe is a direct buried preheating heat preservation pipe with good heat preservation performance, safety and reliability, and low engineering cost. The buried thermal insulation pipe not only has the advanced technology and practical performance that is difficult to compare with the traditional trench and overhead laying pipeline, but also has obvious social and economic benefits, and is also a powerful measure for heating and energy saving. The prefabricated direct buried thermal insulation pipe adopts the direct buried heating pipeline technology, which indicates that the development of China’s heating pipeline […]
November 5, 2018
Flanges are disc-shaped parts that are most common in plumbing and flanges are used in pairs. In plumbing, flanges are mainly used for the connection of steel pipes. In the pipelines that need to be connected, a variety of flanges are installed, and the low-pressure pipelines can use wire-bonded flanges, and the welding flanges are used at pressures above 4 kg. A sealing point is added between the two flanges and then fastened with bolts. Different pressure flanges have different thicknesses and use different bolts. Pumps and valves, when connected to the pipeline, part of these equipment, also made into the corresponding flange […]
May 23, 2018
Insulation steel pipes are widely used in liquid and gas transmission pipe networks, chemical pipe insulation projects in petroleum, chemical, central heating and heating networks, central air-conditioning ventilation pipes, and municipal engineering. High-temperature prefabricated direct-buried thermal Insulation steel pipe is a direct-buried prefabricated thermal Insulation steel pipe with good thermal insulation performance, safety and reliability, and low construction cost. Specification 1.The pre-insulated steel pipe coated with high density polyurethane foam can resistant the temperature up to 140°c. 2.With the corrosion resistant hdpe jacket pipe can make the pipe directly buried underground without trench. 3.Different size pipe and pipe fittings can […]