January 12, 2019


This is a §371 of International Application No. PCT/ 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

Corrosion Resistance of API 5L Pipeline Steel with Coating Protection

ABSTRACT The corrosion resistances of enamel-coated 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

API 5L Grade-B ERW Line Pipe Technical Specifications , 20″DN (508.0 mm)×WT 7.9 mm

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 A106 / A53 Gr. B Seamless Carbon Steel Tube / Pipe

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 seamless and welded black and hot-dipped galvanized steel pipe

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 insulation steel pipe

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

Flange anticorrosive steel pipe

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

Steel Pipe With Heat Insulation | polyurethane thermal insulation steel pipe

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 […]
May 10, 2018

API 5L Line pipe PSL1 / PSL2

Line pipe specification: 10.3-2032×1.7-39.7mm   Executive Standard: GB/T9711.1/API SPEC 5L Uses: Used for gas, water and oil transportation in oil and natural gas industry API SPEC 5L-2011 (Line Pipeline Specification), prepared and published by the American Petroleum Institute, is common across the world. Line pipe: It transports oil, gas or water pumped out of the ground to the oil and gas industry. The line pipe includes two kinds of seamless and welded pipe. The pipe end has a flat end, a threaded end and a socket end; the connection mode is a terminal welding, a coupling connection, a socket connection, and the […]
April 1, 2018

Petroleum Cracking Pipe ASTM A335 Gr P5,LENGTH 5-5.8 Mtr -Russian customers

Hello Dear Sir! Please let me know the possibility of manufacturing of pipes of steel grade 1Cr5Mo ASTM A335 P5. Best regards, Director of “UMTS”, LLC. Vedernikov Ruslan       We ask to inform terms of manufacturing and the price for following positions:  Petroleum Cracking Pipe  ASTM A335 Gr P5   LENGTH 5-5.8 Mtr Grade Diametr Wall thickness Quantity (tn) Price for 1 tn Fob Shanghai 1Cr5Mo 273 11 10   1Cr5Mo 273 12 11   1Cr5Mo 325 10 11   1Cr5Mo 325 12 10   1Cr5Mo 426 10 11   1Cr5Mo 426 12 10     What is ASTM A335 P5 Petroleum […]
March 10, 2018

API 5L Pipeline PSL1 vs PSL2 Pipe Differences Summary

Different impact test methods for PSL1 and PSL2 b. API 5L PSL1 steel line pipe not required to do the impact test. For API 5L PSL2 steel line pipe, except Grade X80, all the other grades of API 5L line pipe required the impact test at temperature of 0℃. The average value of Akv: longitudinal direction≥41J, tranverse direction≥27J. For API 5L Grade X80 PSL2 line pipe, at 0℃ for all the size, impact test the Akv average value: longitudinal direction≥101J, tranverse direction≥68J. PSL 1 VS. PSL 2 SPEC SHEET *PSL1 & PSL2 requirements are given in the latest edition of API […]
March 8, 2018

Size and Weight of Seamless Roll Steel Pipe Schedule,ASME B36.10M-1996

  Nominal Diameter Outside Diameter STD) (XS) (XXS) Sch.no Wall Thickness Nominal Weight NPS DN in. mm in. mm Ib/ft kg/m 1/8 0.405 10.3 STD 40 0.068 1.73 0.24 0.37 1/8 0.405 10.3 XS 80 0.095 2.41 0.31 0.47 1/4 0.540 13.7 STD 40 0.088 2.24 0.42 0.63 1/4 0.540 13.7 XS 80 0.119 3.02 0.54 0.80 3/8 10 0.675 17.1 STD 40 0.091 2.31 0.57 0.84 3/8 10 0.675 17.1 XS 80 0.126 3.20 0.74 1.10 1/2 15 0.840 21.3 STD 40 0.109 2.77 0.85 1.27 1/2 15 0.840 21.3 XS 80 0.147 3.73 1.09 1.62 1/2 15 0.840 […]
February 26, 2018

LIGHT GAUGE STAINLESS STEEL WATER PIPES _ Thin-walled stainless steel tube

Material (Grade): TP304 / 304L, TP316 / 316L Standard (Standard): CL / T 151-2001: “thin-walled stainless steel pipe.” GB / T 19228.2-2003: “Stainless steel thin-walled pipes – pressure pipe” JIS3448: light Gauge Stainless Steel Tubing For General Servive outer diameter (the OD): 16 ~ 219mm  thickness (the WT): 0.6 ~ 3mm (Welding method): TIG or TIG + plasma welding (TLG or TLG + Plasma) (Application): building water supply (Drinking Water System) (Packing ): bundles or wooden packaging (Sea Worthy Bundle or Wooden case) Specifications (Specification) Outer diameter (in) 16 20 twenty two 25.4 28 35 38 40 42 50.8 54 67 70 76.1 88.9 102 108 133 159 219 Thickness (mm) 0.6 V Thickness (mm) 0.8 V V V V V Thickness (mm) 1.0 V V […]
February 25, 2018

Austenitic Stainless Steel Seamless Pipe

Austenitic Stainless steel has stable austenitic structure in normal temperature, it possesses very high corrosion resistance, good cold workability and gcxxJ toughness plastic, weldability and non-magnetic. It has been widely used in chemical,oil refining, boiler, focxJ and other industries of the heat exchanger condenser, evaporator and fluid delivery, etc. Compared to common austenitic stainless steel, super austenitic stainless steel has higher cleanliness uniformity, mechanical properties; more fine structure; better surface quality ;more excellent resistance to harsh medium local corrosion resistance and better process manufacturing performance, etc. It can be used in harsher working condition, stronger corrosive industrial environment, which Can not be […]
February 17, 2018

Wire Wound Screen (Filter Pipe)

The all-welded wire wound sieve pipe is widely used in the oil, gas and water well sand control industries all over the world. Its position in the well industry is particularly prominent. It is the most widely used filter screen of various water resources. Hengying screen using the world’s most advanced all around the welding production process, the application of special trapezoidal wire winding in a circumferential array of supporting wire welded together. Full range of welding, to ensure the product is strictly continuous integrity, so that it forms the ideal gap size, and have the maximum capacity to withstand […]