Specifications: diameter: 320 to 127 mm thickness: 0.4 to 12.7 mm Length: 6 m above, and, in accordance with customer demand, supply and other specifications of steel pipe

Carbon steel pipe manufacturing technology dissertation


Carbon steel pipe manufacturing technology program papers

- Revision: A version of the file number: XYQ15019081 FOR

- Pipe materials procurement pipe manufacturing technology program

(Carbon steel pipe fittings) carbon steel pipe fittings)

- 1.1 Overview: This program provides the pipe material procurement of WPB, A105 pipe fabrication, inspection and production of technical requirements. 1.2, measurement units and text: the text of the technical solutions and related documents the unit of measurement for the legal units of measurement or internationally accepted units of measurement used for the Chinese. 1.3 Scope This program applies of WPB, A105 pipe manufacturing, testing and acceptance.

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- 2, scope of supply, the scope of supply detailed in the tender documents - list of fittings.

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Manufacturing, testing based on standards, norms, manufacture, test-based standard, ASME B31.1 ASTM A106/A106M ASTM A105 ASTM A516/A516M ASTM A234/A234M ASME B16.9 ASME B16.11 MSS SP-97 ASME B16 .25 ASTM E709 ASME VIII UW - 51 ASTM A370/A370M

-Carbon steel pipe

- Raw materials for manufacturing pipe fittings, 4.1, the principle of selection of raw materials (1) produced ASTM A234-of WPB-S seamless pipe fittings, selection of raw materials to ASTM A106 GRB seamless steel pipe production of the ASTM A234-of WPB-W joints pipe fittings, raw materials selection ASTM A516 GR65 plate power piping code said high temperature seamless carbon steel male pipe piping components using carbon steel forgings, low-temperature power pressure vessel with moderate high temperature in the carbon steel plate with malleable fittings manufactured of carbon steel and alloy forged steel butt welding pieces of socket welding and threaded forged steel pipe fittings butt branch butt end of practice of the magnetic particle inspection ASME-ray transillumination and evaluation of mechanical testing of steel products, the standard test methods and definitions of P

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- ⑵ produced ASTM A105 Pipe Fittings of raw materials use ASTM A105 billets; 4.2, material procurement,

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- ⑴ carbon steel from the Panzhihua Iron and Steel Group Chengdu Iron & Steel limited liability company, Baoshan Iron and Steel Group, Tianjin Steel Pipe Group, Shougang Group, Taiyuan Iron and Steel Company, Ltd. and other manufacturers, the procurement of raw materials (the detailed raw material suppliers, see the pipe material procurement framework agreement.) ⑵ Unless otherwise specified, the procurement of materials according to ASTM standards. If I choose domestic brands of materials, should be the consent of the tender side. 4.3, materials, technical requirements,

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- The ⑴ raw material quality requirements in accordance with the tender fittings appropriate level of material standard implementation, requirements and the quality of the final product should be in the tender documents for procurement of raw materials.

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(2) for the production of pipe fittings of all materials and new materials, the surface is clean, no defects;

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(3) bidders are required to provide the origin material manufacturer's quality certificate or a copy of the original. The case of photocopy shall be affixed to the pipe factory quality inspection seal. ⑷ incoming raw materials shall be the standards of materials, sample chemical composition, mechanical properties, such as the reinspection, the reinspection after passing the material to feed production.

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- , Manufacture and inspection of WPB, A105 pipe in accordance with the ASTM A234/A234M, ASTM A105 and ASME B16.9, ASME B16.11, MSS SP-97 standards for manufacturing, testing and acceptance. 5.1, manufacturing, technical requirements, manufacturing pipe raw materials - steel pipe, steel plate thickness should be selected to tolerance of wall thickness. 5.1.1 molding method forming method

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- The ⑴ carbon steel seamless elbows MF induction heating made the type, the heating medium frequency induction heating;

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⑵ carbon steel by the group on the welding seam elbow with steel plate to suppress the half shell elbow into elbow;

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- ⑶ carbon steel seamless three links: the heat dial molding process, the heating furnace heating;

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- ⑷ carbon steel seam three links using a steel plate welded steel pipe, hot pull molding

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- ⑸ carbon steel seamless diameter pipe: thermoforming, heating furnace heating.

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⑹ carbon steel joints diameter pipe: steel plate welded into a steel pipe, molded.

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- ⑺ all tube cap molding steel plate.

⑻ Order of plug-ins and manifold Taiwan billet forging made of

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⑼ all seam pipe welding using manual metal arc welding (SMAW), prior to welding materials need to provide the buyer to cover the seam pipe welding procedure specification (WPS) and welding procedure qualification record (PQR). : 890 ℃ ~ 920 ℃ normalizing the ⑴ WPB-S seamless pipe fittings, 5.1.2. Heat treatment heat treatment heat treatment method for cooling method: air-cooled, to determine the holding time 2.5min/mm wall thickness of not less than 30 min. WPB-W slit pipe heat treatment method as follows: stress relief heat treatment after welding is carried out between 595 ℃ ~ 675 ℃, the cooling method: air-cooled, the thermal insulation time press 5min/mm wall thickness to determine, not less than 45 min. : 890 ℃ ~ 920 ℃ normalizing ⑵ A105 pipe heat treatment method for cooling method: air-cooled, the insulation time press 2.5min/mm wall thickness determined, at least for 45 min. (3) heat treatment equipment for the electric furnace, the temperature measuring device should be calibrated qualified and in the test cycle, the temperature record graph, the heat treatment process should provide treatment reports and heating temperature curve recorder. 5.1.3. Machine processing and tube parts of the structure size: machine processing and tube parts of the structure dimensions: the structure of the machine processing and pipe pieces the size tube piece of the groove processing, using machining methods end of the groove processing according to the standard structure size and type of tolerance and connection shall comply with ASME B16.9, ASME B16.11, MSS SP-97 standard requirements; 5.1.4 Finish: Finish: the surface treatment of all ASME B16.9 pipe surface grinding to remove the inside The outer surface defects and oxide shot blasting treatment, shot blasting surface should be Sa2.5 level, brushing two inorganic zinc primer, paint thickness of 75 microns. 5.1.5 Repair welding: welding repair: repair welding without the owners approval, the pipe body shall carry out the welding repair. For welding need to develop welding process approved by the newspaper owners before welding. 5.2, testing, 5.2.1. The quality of the surface quality of the surface of the pipe piece by piece surface visual inspection, the inner and outer surfaces of the finished pipe shall be no crack, the presence of pits, fold trend detrimental to strength and the appearance of defects. For not more than 10% of the design wall thickness in depth and not immersed in the minimum wall thickness of the scar, crack, folding, slag, grinding methods to clear. Eliminate defects, the remaining wall thickness of not less than the nominal wall thickness of 90%. Otherwise, the pipe for scrap processing. The appearance and size of fittings 5.2.2. Size inspection and dimensional inspection (1) in accordance with the ASME B16.9, ASTM B16.11, MSS SP-97-by-piece inspection, mechanical dimensions and size deviation should be consistent with relevant standards. Size deviation should be credited to the inspection report; ⑵ wall thickness: ultrasonic thickness gauge by measuring its thickness deviation: ± 10%. Wall thickness measurement results shall be credited to the inspection report; 5.2.3. Hardness test hardness test each batch of pipe pumping a hardness test of WPB pipe hardness: HB ≤ 197, the A105 pipe hardness: 137 ≤ HB ≤ 187 test results entered in the inspection report. 5.2.4 non-destructive detection of non-destructive testing ⑴ carbon steel pipe according to ASTM E709, 100% magnetic particle flaw detection, magnetic particle testing includes inner and outer surfaces, the surface within the groove and the end of a pipe 100 mm to meet the standard requirements in order to pass; ⑵ joints Pipe Fittings In addition to the above test, according to ASME VIII UW - 51 standard 100% ray detection, weld meet the standard requirements in order to pass; 5.2.5 refined tensile properties of finished tensile properties of the tensile properties of the finished pipe shall comply with the requirements of the corresponding grades. Should each batch of the finished fitting (the same material, heat number, the same heat treatment furnace as a group, or prepared with the same process with the furnace sample representative) to take a mechanical test, the test standard ASTM A 370, and issue a report, to meet the performance requirements of the appropriate material grade. 5.3. Other requirements of the requirements of the finished pipe pieces should be related products standard provisions in the pipe significantly with the position marked with durability flag, flag content, including: (1) product name or code; (2) the public, said diameter and wall thickness grade; (3) material grades and materials, furnace ; (4) product standards;

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Protection, 6.1, anti-corrosion:, anti-corrosion: ASME B16.9, carbon steel pipe shot blasting treatment, shot blasting surface should reach Sa2.5 level surface purge with dry compressed air. Pipe surface needs to be painted in two inorganic zinc-rich end of ⑸ code; (6) factory code "XY paint thickness of 75 microns. 6.2, protection: protection: the pipe in the process of manufacturing, transportation should be prepared to moisture, anti-collision .

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- , Packaging and transport, 7.1, Packing:, Packaging: ⑴ pipe packaging to moisture, anti-rain, anti-collision requirements. ⑵ packaging marks should be consistent with the relevant provisions of the tender documents. A sign on the transport packaging labels by the seller to specify the address of consignee, name of goods, shipping origins and destinations, the lifting position, each part should indicate the name, size, part number, material shipped. ⑶ each package, packing list, certificate, quality certificate of compliance, these documents sealed plastic bag to seal in the box side, have a package number for each package. Transport: 7.2 Transport: road motor transport sent to the buyer of the designated locations.

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- 8, the delivery of documents, 8.1 product certificate: product certificate: Qualified pipe products shall be the buyer submit the pipe duplicate certificate of the paper size in A4, each page stamped with the seller quality inspection special seal, quality of raw materials a copy of the certificate must be stamped with the seller red quality inspection and special seal. A certificate of competency shall include the following: (1) products leaving the factory inspection reports (including inspection and test reports, treatment reports, NDT reports, test reports); quality of the product (2) raw materials inspection report (including raw materials, quality certificates and reinspection report) ⑶ certificate;

8.2 Packing List: Packing list: for the goods in the five days prior to delivery (delivery day) would be consistent with the packing list of the buyer format by fax to the buyer contract managers and the consignee, and by phone confirmation has been received complete. Packing list in duplicate, paper size A4, delivery of the goods at the same time.

 

9, the overall quality control program and quality to ensure overall quality control program and quality assurance 9.1 Quality Control: Quality control: (1) in the tube pieces of product manufacturing process should be strictly in accordance with the relevant product technical standards, specifications and seller quality control procedures carried out product design, manufacture, inspection and testing to ensure that each process is controlled state; (2) before the beginning of the pipe manufacturing activities, according to the associated fittings product standards, the preparation of the "quality scheme", the implementation of the press plan organization; (3) in the pipe pieces of The strict implementation of process planning, manufacturing process to make product identification and identifies the transplant, to prevent confusion. (4) according to the standards prescribed by the tender documents, specification requires the implementation of the inspection and testing of the pipe and the formation of the corresponding inspection records, reports. When necessary, to invite the buyer to the factory for some testing and pilot projects in the pipe manufacturing process to be checked. ⑸ In addition to the buyer ordering the annex to the contract requirements for the witness of the pilot project, the entire pipe fittings manufacturing process should be subject to inspection by the representative of the buyer or third-party Quality Supervision, Inspection, in the inspection process, the seller is obliged to provide all the drawings and relevant standards, specifications, test tools, or equipment, so that the buyer or third-party Quality Supervision, Inspection unit of work. ⑹ when in the annex to the contract stipulated that the buyer needs to participate in the witness test, test date is confirmed, the seller should have at least one week in advance notify the buyer in order to allow the buyer to in time to participate. 9.2 Quality Assurance: Quality assurance: 9.2.1 the Seller shall ensure that the quality of the goods supplied shall comply with an inquiry by the tender documents, drawings, technical protocols and standards require the performance of the products should meet the provisions of the relevant product quality standards; 9.2 .2 seller for the period of the quality assurance of goods to drive one and a half years the first time chemical plant for 24 months after delivery or tender of goods. 

relevant The information: http://www.netgms.com/carbon-steel-pipe.html

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