FABRICATION
For more than ten years, PetroSan Oilfield Engineering Co. has provided general and structural fabrication services to the onshore and offshore oil and gas as well as industrial markets. In addition to producing our own goods, PetroSan provides fabrication services in compliance with customer-provided design specifications and drawings to outside clients in a number of global locations. Our facilities have the newest technology, strict adherence to quality standards, knowledgeable operators and technicians, and top-notch engineering support. The engineering and specialty welding consulting team at PetroSan can also assist in resolving challenging welding issues. All of the above facilities are open for your consideration. external coating and paints.
Oilfield Fabrication: Welding and Fabrication for the Oilfield projects; Custom Fabrication, Pipe Spool Fabrication, flanged fittings fabrication, oil and gas storage tank fabrication Wellhead Repairs, Upgrades and Modifications of Rigs, Barge Repairs, Top Drive Installation Fittings, piping clamp fabrication, large dia. two weld joint fittings fabrication, pipe spool fabrication, Piping Skids Fabrication.
PetroSan oilfield Engineering Co., With a global industrial presence, Petrosan is a major manufacturer, fabricator, supplier and exporters of pipe insert sleeves, tube insert sleeves (Ferrule), pipe repair clamps, line stop hot tap fittings, piping spools, and monolithic insulation joint pipe repair sleeves. They can support all of your projects. Our teams provide the industry with fabrication and manufacturing services for oil and gas production and exploration wells, as well as oilfield products for both onshore and offshore projects and the hydrocarbon processing sector.
PIPING DESIGN AND FABRICATION :
4.1. GENERAL – Piping Fabrication and Erection Specification
Fabrication works shall comply with the drawings and this specification including relevant Engineering and Construction Specifications.
4.1.1. All weld numbers and welder’s identification number shall be painted close to the weld, to enable trace ability of each weld and each welder, socket welds shall be numbered per fitting, e.g. S.W tee has one weld number.
4.1.2. Construction Contractor shall maintain the color coding on piping materials to allow easy and quick reference in accordance with the project engineering specification.
4.1.3. All materials included in the finished piping systems shall be undamaged.
4.1.4. Construction Contractor must provide adequate protection for piping, flange faces, threaded connections, etc. to prevent damage during handling and storage. Construction Contractor shall ensure that flange faces are protected from corrosion or rust.
4.1.5. Piping shall be stored in a relatively clean, dry or well drained area on elevated dunnage and protected against contact with salts or salty water.
4.1.6. All attachments to piping, i.e. saddles, pads, etc. are to be made of same material to the pipe.
4.2. DIMENSIONAL – Piping Fabrication and Erection Specification
TOLERANCE
4.2.1. Wrought Bends
A. Wrought bends shall show no significant marks or corrugations and shall be smooth and regular in outline. Flattening shall not exceed 8% of the pipe outside diameter for pressure duties, or 3% of the pipe outside diameter for vacuum duties. There shall be no significant thinning when the pipe bend radius is 5 x nominal diameter or greater.
B. In general thickness stainless steel pipe of equivalent to schedule 10S and thinner shall not be bent.
4.2.2. Pipe Dimensions
Tolerances shall be ±1.5mm from flange face to flange face, or centerline of pipe to flange face.
4.2.3. Flange Face
Flange faces shall not be concave. Convexity from flange bore to joint face periphery shall not exceed 0.15mm per centimeter width of joint face.
4.2.4. Squareness of Flanges
Flanges shall be square to the axis of the pipe to within an angle of 0° ‑ 18′ (0.3°) I.E. 0.05mm per centimeter measured across the face of the flange, with the pipe adequately supported.
4.2.5. Bolt Holes of Flanges
Flange bolt holes shall straddle the established centerlines (Horizontal or vertical). However, flanged connections on equipment may vary and should be individually checked. When these connections differ, the bolt hole orientation shall be indicated on the isometric piping detail sheet. Holes in double flanged pipes shall be correctly aligned.
4.3. WELD DETAILS – Piping Fabrication and Erection Specification
4.3.1. Butt Welds
The term “Butt‑Weld” refers to circumferential butt joints only. Special requirements may be imposed where longitudinal welds are to be made and these welds shall not be carried out before Consultant has approved the methods to be used. Longitudinal and spiral welds existing in pipes as produced at the mill are outside the scope of this specification.
4.3.2. Weld Preparation
Weld preparation shall be in accordance with the following:
A. Preparation standard shall be applied to ASME B31.3 and the modifications to the standard contained within clause 5.3.6 of this specification.
B. Ends shall be beveled or square cut for welding as follows:
1) Beveled for wall thickness greater than 2.3mm
2) Square cut for wall thickness 2.3 mm and less
4.3.3. Root Gaps
Spacers shall be used while tack welding pipe and fittings in position to insure proper gap and full penetration in welding. The tack welds complying with the requirements of ASME B31.3, 328.5.1(C) may be allowed to become a part of the finished weld, whereas those not complying are not acceptable and must be chipped out before completing the weld.
4.3.4. Bore Matching and Alignment
Bore matching and alignment shall be in accordance with ASME B31.3. Where pipe, fittings and flanges are to be joined by circumferential butt‑welds, the corresponding parts shall be modeled and matched so that any misalignment at the inside of the piping shall not exceed 1/16 inch at any point of the circumference of the joint.
Fit‑up work may include pressing, hammering, local heating or grinding as required to reduce any misalignment due to diameter tolerances, out‑of‑roundness or unequal wall thickness of the parts of less than 1/16 inch. parts having unequal wall thickness and bores shall be prepared in accordance with one of the details shown in ASME B31.3.
4.3.5. Cutting
A. Pipes may be cut mechanically by sawing or grinding machine.
B. Cutting method involving heating e.g. Flame or arc cutting for carbon steel are allowed providing the cut edge is machined or ground back sufficiently far to give specified parent material properties at the cut edge with a minimum of 1.5 mm.
C. Plasma‑jet cutting may be use to cut austenitic stainless steel pipes and other materials.
D. Flame cutting of austenitic stainless steel pipe is not allowed.
E. Other methods of cutting may be used providing written approval is obtained from Consultant.
4.3.6. Welding Position of Longitudinal Seams
Longitudinal seams in seam welded pipe shall be located so as to clear openings and external attachments possible. Longitudinal seams in adjoining courses shall be preperably at 180°but a minimum between seams are in accordance with construction specification.
4.4. BRANCH WELDS – Piping Fabrication and Erection Specification
Branch connections shall be located as indicated on the piping detail sheet or isometric piping drawings. All branch connections shall be designed in accordance with Para. 304.3 of ASME B31.3. Forged or extruded branch connections are preferred.
4.4.1. No Fitting
Branches shall be of ‘Stub‑in’ design in accordance with Construction Specification 0000-S1830-003 and ASME B31.3.
4.4.2. Forged branch attachments (Brancholets) shall be of the type specified on Consultant’s drawings and fitted accurately to the contours of the run pipe.
4.4.3. Reinforcing Pads
A. For pressure reinforcement
Reinforcing pads required by the referenced code or by piping detail sheets shall be provided with at least one vent hole if fully welded. The hole shall be drilled and tapped with a 1/8 inch pipe thread for testing and venting. The tapped hole shall be plugged using wood, plastic or mastic material not capable of retaining pressure.
B. For structural attachment
Reinforcing pads for structural attachment shall be provided with an untapped hole of 1/4 inch (6 mm) diameter for venting.
C. Where reinforcing pads are fitted either for branches or structural attachments they shall be accurately shaped so that no gap larger than 1/8 inch (3.0mm), measured before welding, shall exist between the periphery of the pad and the pipe to which it fits.
4.4.4. Mitered Bends
Mitered bends shall be in accordance with piping material specification ——. The number of cuts shall be as stated on the drawing. Mitered bends are used only when specified on the drawings and shall be in accordance with ASME B31.3 Chapter V. A joint efficiency not exceeding 70% shall be used in the strength calculations for mitered bends. The welds in mitered bends shall penetrate the full thickness of the pipe and the bead on the inside of the throat shall be smooth and have an even curvature. In order to prevent a notch effect.
4.4.5. Beveled Ends
Refer to Construction Specification XXX
4.4.6. Fillet Welds
Refer to Construction Specification XXX
4.5. BENDING – Piping Fabrication and Erection Specification
4.5.1. Bends shall conform dimensionally to the drawings and relevant clauses of this specification. Hot bend is not permitted.
4.5.2. Cold Bending
A. Cold bends to a centerline radius greater than five (5) times the nominal pipe diameter may be manufactured without a subsequent heat treatment unless a heat treatment is specified on the project specification, piping detail sheets, or isometric drawings.
B. Cold bends to a radius less than five (5) times the nominal pipe diameter is not allowed.
C. Bending after completion of fabrication to meet dimensional requirements shall not be carried out without the approval of the engineer.
Piping and structural fabrication is the process of cutting, bending, and assembling pipes to form a specific piping system for a variety of industrial and structural uses. This process consists of several steps, including the design and planning phase, material selection based on the type of fluid and the conditions it will be exposed to, cutting the pipes to the required length, bending them to the necessary angles, and finally welding or joining them together to form a continuous path for fluid transportation. The quality of piping fabrication is crucial for assuring the integrity, safety, and efficiency of piping systems, particularly in industries such as oil and gas, chemical processing, and electricity production.
Products constructed from steel pipes that have been specially crafted or adjusted to satisfy particular specifications are referred to as steel piping fabricated products. These goods may consist of:
1. Pipe fittings (elbows, tees, couplings, etc.).
2. Pipe spools.
3. Flanges.
4. Valves.
5. Pipe supports and hangers.
6. Custom pipe assemblies.
7. Pipe racks and skids.
8. Boiler tubes and components.
9. Heat exchanger tubes and components.
10. Pressure vessel components.
11. Tank Fabrication.
Pipe Rolling and fabrication.
Fabricated steel piping products are used in various industries, including:
1. Oil and gas
2. Power generation
3. Chemical processing
4. Water treatment
5. Food processing
6. Pharmaceutical
7. Construction
8. Shipbuilding
These products are made using various techniques, such as:
1. Cutting (sawing, shearing, etc.)
2. Welding (MIG, TIG, ARC, etc.)
3. Bending (hot and cold)
4. Forming (rolling, pressing, etc.)
5. Machining (drilling, milling, etc.)
6. Coating and lining (painting, galvanizing, etc.)
PetroSan Fabrication services, custom metal fabrication, steel fabrication, aluminum fabrication, sheet metal fabrication, welding and fabrication, industrial fabrication, metal fabrication companies, precision fabrication, heavy metal fabrication, structural steel fabrication, fabrication and welding services, CNC fabrication, fabrication solutions, fabrication works, custom fabrication services, metal fabrication shop, fabrication company, lasercut fabrication metal fabricators, fabrication engineering, metal fabrication services, custom steel fabrication, fabrication industry, bespoke metal fabrication, fabrication projects, local fabrication companies, prototype fabrication.
The global reach of PetroSan Oilfield Engineering Co. is boundless, it is constantly expanding, evolving, and demanding. a society that values diversity in skill sets, ongoing piping innovation, long-term development, oilfield piping repairing and improved living standards and manufacturer of :
Manufacturer of Pipe Repair Self-Sealing Clamps, Manufacturer of Repair Split Sleeve, Manufacturer of High Pressure Bolted Clamp, Manufacturer of Pipe External Alignment Clamp, Manufacturer of Pipe Repair Block Clamp, Manufacturer of Band Strap Clamp, Manufacturer of half pipe sleeve, Manufacturer of type a pipe sleeve, Manufacturer of type b pipe sleeve, Manufacturer of pipe insert sleeve, Manufacturer of galvanized wall sleeve, Manufacturer of bolted pipe repair clamp, Manufacturer of adaptor flange, Manufacturer of pre-stressed sleeve, Manufacturer of flange repair clamp, Manufacturer of pin-hole pipe repair clamp, Manufacturer of split tee sleeve / clamp, Manufacturer of pipe leak repair clamp, Manufacturer of line stop hot tap fittings, Manufacturer of pipeline pig, Manufacturer of pressure vessel dish end , Manufacturer of anode, Manufacturer of elbow repair clamp, Manufacturer of O-ring and spares, Manufacturer of solid block clamp, Manufacturer of pig handling system, Manufacturer of scraper trap/flow tees.
PetroSan Oilfield Engineering Co. one of the most varied Fabricator of :
Fabricator of Pipe Repair Self-Sealing Clamps, Fabricator of Repair Split Sleeve, Fabricator of High Pressure Bolted Clamp, Fabricator of Pipe External Alignment Clamp, Fabricator of Pipe Repair Block Clamp, Fabricator of Band Strap Clamp, Fabricator of half pipe sleeve, Fabricator of type a pipe sleeve, Fabricator of type b pipe sleeve, Fabricator of pipe insert sleeve, Fabricator of galvanized wall sleeve, Fabricator of bolted pipe repair clamp, Fabricator of adaptor flange, Fabricator of pre-stressed sleeve, Fabricator of flange repair clamp, Fabricator of pin-hole pipe repair clamp, Fabricator of split tee sleeve / clamp, Fabricator of pipe leak repair clamp, Fabricator of line stop hot tap fittings, Fabricator of pipeline pig, Fabricator of pressure vessel dish end , Fabricator of anode, Fabricator of elbow repair clamp, Fabricator of O-ring and spares, Fabricator of solid block clamp, Fabricator of pig handling system, Fabricator of scraper trap/flow tees, Fabricated Two Half Joint Tee Fittings.
Home, Products, Petrosan Sleeve + Clamp, Split Sleeve Pipe Repair Clamp, Flange repair ring clamp, , Pipe End mechanical Coupling, PetroSan Pipe Sleeve, Pipe Reinforcing Split Sleeve, Type A Reinforcing Sleeve, Type B Reinforcing Sleeve, Cold/Hot Tapping Fittings, Line Stop hot tapping fittings, , Tube insert’s or Ferrule (Alloy 601), Tube insert’s or Ferrule (Alloy 602ca), Tube insert’s ferrule (Alloy 693), Gallery
Petrosan is fabricators and manufacturers Construction Work for Piping, Pressure Test of Piping System, Cleaning for Pipe Lines, Welding Procedure for Piping , Welder Qualification Test, Inspection & Test of Piping Construction, Piping hanging & support, Piping Design, Marking & Color Coding, Painting Specification, Process Piping – ASME B31.3, Unified Inch Screw Threads – ASME B1.1, Pipe Threads, General Purpose (Inch) – ASME B1.20.1, Pipe Flanges and Flanged Fittings NPS 1/2” – ASME B16.5, Factory-Made Wrought Steel Butt welding Fittings – ASME B16.9, Forged Steel Fittings, Socket Welding and Treaded – ASME B16.11, Butt Welding Ends – ASME B16.25, Square and Hex Nuts (Inch Series) – ASME B18.2.2, Welded and seamless Wrought Steel Pipe – ASME B36.10, Stainless Steel Pipe – ASME B36.19, Wrought Stainless Steel Butt Welding Fittings – MSS-SP-43, Boiler and Pressure Vessel Code – ASME-VIII, Boiler and Pressure Vessel Code – ASME-IX, Pipe Spools Fabricator, Piping Assemblies Fabricatr, Pipe Supports Fabricator, Pipe Hangers Fabricator, Clamps Fabricator, Straps Fabricator, Saddles Fabricator, Expansion Joints Fabricator, Flexible Connectors Fabricator, Pipe Bends Fabricator, Pipe Coils Fabricator, Orifice Plates Fabricator, Venturi Tubes Fabricator, Flow Meters Fabricator, Pipe Coating (FBE, 3LPE, 3LPP).
We Manufacture, Export and supply to many Countries as follows :
- ASIA – India, Japan, Thailand, Singapore, Sri lanka, Bangladesh, South Korea, Indonesia, Philippines, Vietnam, Kazakhstan, Azerbaijan, Turkmenistan.
- Middle East – Kuwait, Dubai, Saudi Arabia, Qatar, Oman, Bahrain, Jordan, Turkey, Iraq, Yemen, Syria, Azerbaijan, United Arab Emirates, Israel.
- Western Europe – Germany, France, Netherlands, Belgium, Austria, Switzerland, Luxembourg, Monaco, Liechtenstein
- Eastern Europe – Russia, Ukraine, Poland, Romania, Czechia, Hungary,Belarus, Bulgaria, Slovakia, Moldova
- Northern Europe – United Kingdom, Sweden, Denmark, Finland, Norway, Ireland, Lithuania, Latvia, Estonia, Iceland, Isle of Man, Faeroe Islands
- Southern Europe – Italy, Spain, Greece, Portugal, Serbia, Croatia, Bosnia and Herzegovina, Albania, North Macedonia, Slovenia, Montenegro, Malta, Andorra, Gibraltar, San Marino, Holy See
- South America – Argentina, Chile, Brazil, Colombia, Paraguay
- Western Africa – Nigeria, Ghana, Côte dIvoire, Niger,Burkina Faso, Mali, Senegal, Guinea, Benin, Togo, Sierra Leone, Liberia, Mauritania, Gambia, Guinea-Bissau, Cabo Verde, Saint Helena
- Northern Africa – Egypt, Sudan, Algeria, Morocco, Tunisia, Libya, Western Sahara
- Southern Africa – South Africa, Namibia, Botswana,Lesotho, Swaziland
- Eastern Africa – Ethiopia, Tanzania, Kenya, Uganda,Mozambique, Madagascar, Malawi, Zambia, Zimbabwe, South Sudan, Rwanda, Burundi, Somalia, Eritrea, Mauritius, Djibouti, Réunion, Comoros, Mayotte, Seychelles