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GB/T 37606-2019 English PDF

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GB/T 37606-2019: Titanium-steel clad or lined pipes
Status: Valid
Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
GB/T 37606-2019359 Add to Cart 4 days Titanium-steel clad or lined pipes Valid

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Basic data

Standard ID: GB/T 37606-2019 (GB/T37606-2019)
Description (Translated English): Titanium-steel clad or lined pipes
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H48
Classification of International Standard: 77.140.75
Word Count Estimation: 18,157
Date of Issue: 2019-06-04
Date of Implementation: 2020-05-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 37606-2019: Titanium-steel clad or lined pipes

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Titanium-steel clad or lined pipes ICS 77.140.75 H48 National Standards of People's Republic of China Titanium-steel composite pipe 2019-06-04 release 2020-05-01 implementation State Administration of Market Supervision Published by China National Standardization Administration

Contents

Foreword III 1 Scope 1 2 Normative references 1 3 Terms and definitions 2 4 Classification 2 5 Order content 3 6 Dimension, shape, weight and allowable deviation 3 7 Technical requirements 4 8 Test method 9 9 Inspection rules 10 10 Packaging, marking and quality certificate 10 Appendix A (Normative Appendix) Weight Calculation Method of Compound Management Theory 12

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by China Iron and Steel Industry Association. This standard is under the jurisdiction of the National Steel Standardization Technical Committee (SAC/TC183). This standard was drafted. Hunan Xiangtou Jintian Technology Group Co., Ltd., Jiangsu Zhongxin Green Pipe Industry Technology Co., Ltd., Shangshangde Sheng Group Co., Ltd., Hunan Xiangtou Jintian New Material Co., Ltd., and Metallurgical Industry Information Standard Research Institute. The main drafters of this standard. Zhou Hui, Li Changyi, Liu Jianan, Chen Xiang, Ji Xuewen, Peng Dan, Dong Li, Xie Yi, He Zhongchen, Qian Lezhong, Yang Sheng, Li Qi. Titanium-steel composite pipe

1 Scope

This standard specifies the terms and definitions, classification, ordering content, size, shape, weight and allowable deviation of titanium-steel composite pipes, technical requirements, Test methods, inspection rules, packaging, marking and quality certificates. This standard is applicable to titanium, multi-layer, carbon structural steel, high-quality carbon used in petrochemical, marine equipment, power energy, environmental protection and other fields. Structural steel or low-alloy high-strength structural steel is a composite pipe with a base layer (hereinafter referred to as "composite pipe").

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 222 steel product chemical composition allowable deviation GB/T 223.3 Methods for chemical analysis of iron, steel and alloys. Diantipyrine methane phosphomolybdic acid gravimetric determination of phosphorus content GB/T 223.5 Determination of acid-soluble silicon and total silicon content in steel. Reduced silicate molybdate spectrophotometry GB/T 223.11 Determination of chromium content in steel and alloys by visual or potentiometric titration GB/T 223.12 Methods for chemical analysis of iron, steel and alloys-Sodium carbonate separation-Diphenylcarbazide photometric method for the determination of chromium content GB/T 223.14 Methods for chemical analysis of iron, steel and alloys Determination of vanadium content by tantalum reagent extraction spectrophotometry GB/T 223.19 Methods for chemical analysis of iron, steel and alloys-New copperine-chloroform extraction photometric method for determination of copper content GB/T 223.25 Methods for chemical analysis of iron, steel and alloys. Determination of nickel content by butanedione oxime gravimetric method GB/T 223.26 Determination of molybdenum content in steels and alloys thiocyanate spectrophotometric method GB/T 223.32 Methods for chemical analysis of iron, steel and alloys Determination of arsenic content by sodium hypophosphite reduction-iodometric method GB/T 223.37 Methods for chemical analysis of iron, steel and alloys-Distillation separation-Indophenol blue photometric method for determination of nitrogen content GB/T 223.40 Determination of niobium content in steels and alloys Chlorosulfenol S spectrophotometric method GB/T 223.58 Methods for chemical analysis of steel and alloys-Determination of manganese content by sodium arsenite-sodium nitrite titration method GB/T 223.59 Determination of phosphorus content in iron, steel and alloys Bismuth phosphorus molybdenum blue spectrophotometry and antimony phosphorus molybdenum blue spectrophotometry GB/T 223.60 Methods for chemical analysis of iron, steel and alloys-Determination of silicon content by perchloric acid dehydration gravimetric method GB/T 223.61 Methods for chemical analysis of iron, steel and alloys-Determination of phosphorus content by ammonium phosphomolybdate capacity method GB/T 223.67 Determination of sulfur content in iron, steel and alloys Methylene blue spectrophotometric method GB/T 223.82 Determination of hydrogen content in iron and steel by inert gas pulse fusion thermal conductivity method GB/T 223.84 Determination of titanium content in steel and alloys Diantipyrine methane spectrophotometric method GB/T 223.86 Determination of total carbon content in steel and alloys. Infrared absorption method after combustion in induction furnaces GB/T 228.1 Tensile test for metallic materials-Part 1. Test method at room temperature GB/T 241 Metal pipe hydraulic test method GB/T 246 Test method for flattening of metallic tubes GB/T 699 high-quality carbon structural steel GB/T 700 carbon structural steel GB/T 1591 low alloy high strength structural steel GB/T 2102 Acceptance, packaging, marking and quality certificate of steel pipes GB/T 2650 Welded joint impact test method GB/T 2651 Tensile test method for welded joints GB/T 2653 Welded joint bending test method GB/T 2975 Sampling location and sample preparation for mechanical properties test of steel and steel products GB/T 3091 Welded steel pipe for low-pressure fluid transportation GB/T 3620.1 Titanium and titanium alloy grades and chemical composition GB/T 3620.2 Allowable deviation of chemical composition of titanium and titanium alloy processed products GB/T 3624 titanium and titanium alloy seamless pipe GB/T 3625 Titanium and titanium alloy tubes for heat exchangers and condensers GB/T 4336 Determination of multi-element content in carbon steel and low-alloy steels by spark discharge atomic emission spectrometry (conventional method) GB/T 4698 (all parts) Methods for chemical analysis of titanium, titanium and titanium alloys GB/T 6396 Test method for mechanical and technological properties of composite steel plates GB/T 8163 seamless steel pipe for fluid GB/T 8547 titanium-steel composite plate GB/T 9711 steel pipe for pipeline transportation system in oil and gas industry GB/T 9948 seamless steel pipe for petroleum cracking GB/T 11261 Determination of oxygen content in steel-Pulse heating inert gas fusion-infrared absorption method GB/T 13793 straight seam welded steel pipe GB/T 17395 seamless steel pipe size, shape, weight and allowable deviation GB/T 20066 Sampling and sample preparation methods for determination of chemical composition of steel and iron GB/T 20123 Determination of total carbon and sulfur content in iron and steel. Infrared absorption method after combustion in high frequency induction furnace (conventional method) GB/T 20124 Determination of nitrogen content in iron and steel. Inert gas fusion thermal conductivity method (conventional method) GB/T 20125 Determination of multi-element content in low alloy steels by inductively coupled plasma emission spectrometry GB/T 21835 Welded steel pipe size and weight per unit length GB/T 30062 steel tube terminology NB/T 47013.2 Non-destructive testing of pressure equipment-Part 2. Radiographic testing NB/T 47013.11 Non-destructive testing of pressure equipment-Part 11. X-ray digital imaging inspection

3 terms and definitions

The terms and definitions defined in GB/T 30062 and the following apply to this document. 3.1 Titanium is used as the composite layer, and carbon structural steel, high-quality carbon structural steel and low-alloy high-strength structural steel are used as the base.

4 Classification

4.1 The composite pipes are classified as follows. a) Metallurgical composite straight seam welded pipes; b) mechanical composite pipe. 4.2 The composite pipe is classified as follows according to the location of the layer. a) inner layer; b) outer layer.

5 Order content

A contract or order placed under this standard shall include the following. a) the number of this standard; b) product name; c) Grade. grade of base material/grade of multi-layer material; d) Dimensions (outer diameter × total wall thickness/multilayer wall thickness, unit is mm); e) quantity ordered (total weight or total length); f) manufacturing category; g) location of the stratum (inner or outer); h) delivery status; i) Special requirements. 6 Size, shape, weight and tolerance 6.1 Outer diameter and wall thickness The nominal outer diameter (D) of the composite pipe should be 16mm ~ 530mm, and the thickness of the cladding (S1) should not be less than 0.5mm. Selection should meet the requirements of GB/T 17395 or GB/T 21835. According to the requirements of the purchaser, after consultation between the supplier and the purchaser and indicated in the contract, Supply of composite pipes other than those specified in GB/T 17395 or GB/T 21835. 6.2 Allowable deviation of outer diameter and wall thickness The allowable deviation of the nominal outside diameter and wall thickness of the composite pipe shall meet the requirements of Table 1. According to the requirements of the purchaser, after consultation between the supply and demand parties and the contract It is indicated in the specification that composite pipes with tolerances other than those specified in Table 1 can be supplied. Table 1 Allowable deviation of outer diameter and wall thickness in millimeters Nominal outer diameter D Allowable deviation of outer diameter Allowable deviation of wall thickness a Tube end b Total wall thickness S Multilayer thickness S1 16 ~ < 20 ± 0.10 ± 0.10 20 ~ < 88.9 ± 0.75% D ± 0.5% D 88.9 ~ < 219 ± 0.75% D ± 0.75% D 219 ~ ≤530 ± 1% D or ± 3.2, whichever is smaller ± 10% S ± 10% S1 a Deviations in wall thickness do not apply to welds. b Pipe end refers to the steel pipe within 100mm length of each end of the steel pipe. 6.3 Tube out of roundness The roundness of the pipe body should not exceed 80% of the outer diameter tolerance. 6.4 Bend 6.4.1 The bending degree of the composite pipe shall not be greater than 2mm/m, and the total length bending degree shall not be greater than 0.2% of the length of the composite pipe. 6.4.2 According to the requirements of the purchaser, after consultation between the supplier and the purchaser, and in the contract, other bends may be specified. 6.5 Length 6.5.1 Normal length The general length of the composite pipe should be 3000mm ~ 12000mm. 6.5.2 Cut-to-length The fixed length of the composite pipe should be within the normal length range, and the allowable deviation of the fixed length is 50 0 mm. According to the demand side, The parties have negotiated and stated in the contract that they can supply fixed-length tubes and other composite tubes with tolerances outside the usual length range. 6.6 Tip shape 6.6.1 The two ends of the composite pipe shall be cut perpendicular to the axis of the composite pipe, and the burrs in the cut shall be removed. 6.6.2 According to the needs of the demand side, after consultation between the supply and demand sides, and in the contract, the grooves can be processed at both ends of the composite pipe. Determined by the parties. 6.7 Weight 6.7.1 The composite pipe is delivered according to the theoretical weight, or it can be delivered according to the actual weight. 6.7.2 The theoretical weight of the composite pipe shall be calculated in accordance with the provisions of Appendix A.

7 Technical requirements

7.1 Grades and chemical composition of composite pipes 7.1.1 Typical composite pipe cladding and base material grades shall meet the requirements of Table 2. According to the requirements of the purchaser, after consultation between the supply and demand parties, and It is stated in the contract that other brands than Table 2 can be used. Table 2 Typical composite pipe materials Material standard number Multilayer GB/T 3620.1 TA1G, TA2G, TA3G, TA4G, TA8, TA9, TA10, TC4 Grassroots GB/T 699 20 GB/T 700 Q195, Q215A, Q215B, Q235A, Q235B GB/T 1591, GB/T 8163 Q355B/Q345A, Q345B GB/T 9711 L245 or B, L290 or X42, L320 or X46, L360 or X52 7.1.2 Except for the bonding interface, the chemical composition (smelting analysis) of the composite pipe cladding and base material shall meet the requirements of its corresponding standards. When needed When the party requires the analysis of the finished product, it should be stated in the contract that the allowable deviation of the chemical composition of the basic product analysis should meet the requirements of GB/T 222 The multi-layer should meet the requirements of GB/T 3620.2. 7.2 Raw materials 7.2.1 The raw material titanium-steel composite steel plate (belt) for metallurgical composite straight seam welded pipes shall meet the requirements of GB/T 8547. 7.2.2 The base pipe and multi-layer pipe of mechanical composite pipe can be seamless or welded. When the base pipe is selected as a seamless pipe, it should comply with GB/T 8163, According to the provisions of GB/T 9948 or GB/T 9711, the multi-layer pipe shall meet the requirements of GB/T 3624 or GB/T 3625, respectively. When the base pipe is selected When welding pipes, they should meet the requirements of GB/T 3091, GB/T 13793 or GB/T 9711, and the multilayer pipes should meet the requirements of GB/T 3625. Regulations. 7.2.3 The corresponding standards for the base pipe and the multi-layer pipe of the mechanical composite pipe shall be determined by the supplier and the buyer through consultation and specified in the contract. Composite front substrate tube The internal and external burrs and oil stains of the multi-layer pipe shall be removed. 7.3 Manufacturing method 7.3.1 Metallurgical composite straight seam welded pipe 7.3.1.1 The composite pipe shall be welded by one or more of tungsten gas inert gas welding (GTAW) and plasma arc welding (PAW). Method manufacturing. When the purchaser specifies a welding method or manufacturing process, it should be specified in the contract. 7.3.1.2 When welding the base layer, the base material should not be fused into the multi-layer; the welding of the multi-layer should adopt a low-energy welding process. 7.3.2 Mechanical composite pipe The composite pipe should use a large inner diameter base pipe/multilayer pipe nested with a small outer diameter multilayer pipe/base pipe, which should be processed by spinning, drawing or hydraulic pressure. Way to make. 7.3.3 Double longitudinal welds or girth welds of composite pipes After consultation between the supply and demand parties, and in the contract, the composite pipe can have double longitudinal welds or girth welds. When the composite pipe is delivered with double longitudinal welds, The circumferential distance between the two longitudinal welds shall not be less than.200mm. When the composite pipe is delivered with a girth weld joint, there should be no cross weld. 7.4 Delivery status 7.4.1 Metallurgical composite straight seam welded pipes shall be delivered in the welded state, and mechanical composite pipes shall be delivered in the cold processed state. 7.4.2 According to the requirements of the purchaser, after consultation between the supply and demand parties, and in the contract, the composite pipe can be delivered in other states. 7.5 Mechanical properties 7.5.1 Stretch The composite pipe shall be subjected to a longitudinal tensile test at room temperature, and its mechanical properties shall meet the requirements of Table 3. Tensile test can use base sample or bag Samples of total wall thickness including cladding. When the tensile test is performed according to the base layer, the multi-layer material should be completely removed. Table 3 Mechanical properties of composite pipes Base material Lower yield strength ReL/MPa tensile strength Rm/MPa Elongation after breaking e A /% not less than 1 Q195 195a, b 315 20 Q215A Q215B 215a 335 20 Q235A Q235B 235a 370 20 4 20 245a 410 19 Q345A Q345B 345a 470 18 Table 3 (continued) Base material Lower yield strength ReL/MPa tensile strength Rm/MPa Elongation after breaking e A /% not less than 6 Q355B 355a, c 470 18 7 L245 or B 245d 415 21 8 L290 or X42 290d 415 21 9 L320 or X46 320d 435 20 10 L360 or X52 360d 460 19 a In the tensile test, if the yield phenomenon is not obvious, Rp0.2 can be measured instead of ReL. b The yield strength values of Q195 are for reference only and are not a condition of delivery. c Q355B is the upper yield strength ReH. d L245 or B, L290 or X42, L320 or X46, L360 or X52 determine the specified total tensile strength Rt0.5. e When the total wall thickness tensile test is adopted, the standard value of elongation after breaking of the multi-layer is less than the standard value of the base layer, and the elongation of the composite pipe after breaking is less than the base layer but not less When the standard value of the multi-layer is allowed, the multi-layer is allowed to be cut and only the base layer is subjected to a tensile test. The elongation after breaking should not be less than the standard value of the base. 7.5.2 Welded joint stretching Metallurgical composite straight seam welded pipes with an outer diameter of not less than 114mm shall be subjected to tensile tests on welded joints. For those with an outer diameter not greater than 219.1mm For metallurgical composite straight seam welded pipes, tensile test samples of welded joints can be sampled on the welding test plate.The welding test plate should be the same brand and the same furnace number as the composite pipe. Same welding process. The tensile strength of welded joints shall be determined in accordance with the requirements of Table 3. During the test, the weld shall be located in the middle of the specimen. The test specimen shall meet the requirements of 7.5.1. 7.5.3 Bonding interface shear strength or bonding strength 7.5.3.1 Metallurgical composite straight seam welded pipes with a thickness of not less than 1.5 mm shall be subjected to the joint interface shear strength (τ) test, and the value shall not be low At 140MPa. 7.5.3.2 Metallurgical composite straight seam welded pipes with a cladding thickness of less than 1.5 mm shall be tested by flattening test for bonding strength and flattening test. See 7.6.2, after the test, there should be no delamination or cracking between the base layer and the multi-layer of the pipe end. 7.5.4 Shear strength of mechanical composite pipe 7.5.4.1 The mechanical composite pipe shall be subjected to a shear strength test, and its value shall not be less than 0.5 MPa. 7.5.4.2 Use the method shown in Figure 1 for the shear strength test. Cut a section of circular pipe with a length of not less than 50mm and machine it The method was processed into the structure shown in FIG. 1. A pressure test machine is used to apply a pushing force to the test tube section, so that a slip occurs between the stratum and the base layer, Record the force value F (N) when the slip occurred. The shear strength is calculated according to formula (1). P = ......
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