Stainless Steel Welded Pipe

Forever Steel Manufacturing Co., Ltd
stainless steel welded pipe,SS welded tube,ASTM A312 welded,304 welded pipe,316L stainless welded pipe,tubería soldada de acero inoxidable,EFW steel pipe

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  • Coated steel pipe transportation,3LPE pipe protection,FBE coating safety,steel pipe logistics Middle East,hemp rope pipe buffering
    Specialized Protection Protocols for Coated Steel Pipe Logistics Overview At **Forever Steel**,we understand that a steel pipe is only as good as its surface condition upon arrival,For projects in **South America** and the **Middle East**,our focus is on preventing "Holiday" (coating gaps) and mechanical gouges during the complex multi-modal transport process,Multi-Layered Material Protection We utilize a combination of traditional and modern soft-protection materials to ensure the safety of 3LPE,FBE,and 3LPP coatings: * **Hemp Rope Spiraling**: Thick hemp ropes are coiled around the pipe body to maintain a fixed safety distance between pipes,eliminating friction during sea-transit,* **Straw Mat Interlining**: Heavy-duty straw mats are placed on all timber dunnage to absorb shocks and prevent pressure-point marks on the coating,* **Non-Woven Fabric Shielding**: For sensitive FBE coatings,we offer full-body wrapping in high-density non-woven fabric to protect against dust,UV rays,and micro-abrasions,Compliance & Quality Assurance All our handling and loading procedures follow **API 5L** transportation guidelines and **ISO 21809** standards,We use only nylon webbing slings and padded hooks—**zero metal-to-metal contact** is guaranteed throughout the loading process,Why Choose Forever Steel? Our commitment to detail reduces your project’s "On-Site Repair" costs,We provide a complete **Loading & Bracing Plan** with every shipment,ensuring that your procurement team has full transparency over the safety of your assets,
  • External Coatings,Cathodic Protection,Corrosion Inhibitors,Environmental Management,Monitoring and Maintenance
    Based on the extreme environmental conditions of the Middle East—specifically high ambient temperatures,significant diurnal (day-night) temperature swings,and highly saline or corrosive desert soils—preventing corrosion requires a more robust technical approach than standard environments,Here is the strategy for preventing corrosion in underground oil pipelines specifically tailored for the Middle East: 1,Advanced Coating: 3LPP vs,3LPE In the Middle East,surface temperatures can exceed 50°C,and the oil inside the pipe is often transported at high temperatures,3-Layer Polypropylene (3LPP): While 3LPE is standard globally,3LPP is the preferred choice for Middle Eastern projects (such as those by Saudi Aramco or ADNOC),Polypropylene has a much higher softening point than polyethylene,allowing it to withstand operating temperatures up to 110°C and providing better resistance to the abrasive desert sand,High-Glass Transition FBE: The primer layer (Fusion Bonded Epoxy) must have a high $T_g$ (Glass Transition Temperature) to ensure the coating does not become brittle or lose adhesion during extreme thermal cycling,2,Enhanced Cathodic Protection (CP) High temperatures accelerate the electrochemical corrosion rate (following the Arrhenius Law),For every 10°C increase in temperature,the corrosion rate can nearly double,Impressed Current Cathodic Protection (ICCP): Due to the long distances and high soil resistivity in dry deserts,ICCP is mandatory,Deep Well Anode Beds: To reach stable soil moisture and avoid the high-resistance surface layers dried out by the sun,anodes are typically buried in deep vertical wells,Automatic Rectifiers: Systems must use smart rectifiers that automatically adjust current output to compensate for changes in soil moisture and temperature between day and night,3,Managing Thermal Expansion and Stress The massive temperature delta between the scorching day and cooler night causes the steel to expand and contract significantly,Anti-Abrasion Overcoating: As the pipe moves slightly due to thermal expansion,it rubs against the soil,An additional "Rough Coat" or concrete weighting is often used to prevent the primary anti-corrosion coating from being "sanded" away,Selection of Backfill: Using screened,fine-grained sand for backfilling is critical,This prevents "point loading," where sharp rocks could be pushed through the coating as the pipe expands and contracts,4,Internal Corrosion & MIC Control Even in arid deserts,moisture can condense inside the pipeline or exist in the crude oil,Sulfate-Reducing Bacteria (SRB): These bacteria thrive in the warm underground temperatures of the Middle East,leading to Microbiologically Influenced Corrosion (MIC),Inhibitor Injection: Constant injection of corrosion inhibitors and regular Pigging (using cleaning scrapers) are required to remove water pockets and biofilms from the internal floor of the pipe,5,Remote Digital Monitoring Given the vast and inhospitable nature of Middle Eastern oil fields,manual inspection is difficult,Remote Monitoring Units (RMU): These units use satellite or GSM to transmit CP data (pipe-to-soil potential) to a central office,ensuring the protection is active 24,7 without needing field crews in the heat,Fiber Optic Sensing: Many modern lines bury fiber optic cables alongside the pipe to detect leaks and mechanical stress caused by soil movement or thermal shifts,
  • Bitumen coated pipe,Austenitic stainless steel,Production tubing
    You need custom curves for a specific project,but bending steel often results in wrinkles or cracks,It is frustrating when a simple modification ruins high-quality steel,I will show you how to get the perfect angle,To learn how to bend exhaust pipe effectively,you must support the internal structure to prevent collapse,For manual bending
  • Electric resistance welded,3LPP coated pipe,Polyethylene coated pipe
    Natural gas is a highly flammable and explosive energy source,and its safe transportation is a matter of great importance,Among all transportation methods,long-distance pipelines are considered the safest,fastest,and most cost-effective solution,However,during the operation of these pipelines
  • Structural hollow section,Precision seamless pipe,Drill pipe
    In modern construction and residential water supply systems,PE coated pipe has become one of the most reliable and widely used materials,Known for its corrosion resistance,durability,and flexibility,it provides a practical solution for both hot and cold water pipelines,Below,we explore the operating conditions,installation considerations,and technical performance of PE coated pipes in building applications,

Stainless Steel Welded Pipe

SS welded pipe
Tubería soldada de acero inoxidable TP316L de gran diámetro para desalinización
100% X-ray tested welded SS pipe 316L for high-pressure fluid transportation
Large diameter welded stainless steel pipe ASTM A358 for industrial projects
ASTM A312 TP304 welded stainless steel pipe with longitudinal weld bead removal

Product Type: Stainless Steel Seamless Pipe;Stainless Steel Pipe;ASTM A312 stainless pipe, ASTM A213 stainless tube, ASTM A269 stainless tubing, ASTM A554 stainless pipe, Polished stainless tube,304 stainless steel pipe, 316L stainless steel pipe

Outside Diameter (OD): 6 mm – 2032 mm

Wall Thickness (WT): 0.5 mm – 50 mm (SCH 5S to SCH 160)

Length: 5.8m, 6m, 11.8m, 12m, or Customized (up to 18m)

Surface: Pickled, Bright Annealed (BA), Polished

Process: Cold Drawn, Cold Rolled, Hot Rolled

Pipe Standard: ASTM A312, A213, A269;ASTM A789, A790;ASME SB163, SB444;ASTM B677, A928

Steel Grade: 304/L, 316/L, 310S, 321, 347H,S31803, S32205, S32750, S32760 etc.

Application: Boilers, Heat Exchangers, Power Generation,Offshore Engineering, Petrochemical, Refineries,Chemical Processing, Water Treatment, Mining,Pharmaceutical, Food & Beverage, Sanitary.

  • Description
  • Specification
  • Standard
  • Process
  • Packing

Welded Stainless Steel Pipes (ERW, EFW, LSAW)

High-integrity welded piping solutions manufactured through precision forming and automated welding (TIG, Plasma, or Submerged Arc). Our pipes offer high dimensional accuracy and superior surface quality for structural and fluid transport applications.


1.Quick Specifications

Outside Diameter (OD): 6 mm – 2032 mm

Wall Thickness (WT): 0.5 mm – 50 mm (SCH 5S to SCH 160)

Length: 5.8m, 6m, 11.8m, 12m, or Customized (up to 18m)


2. Standards & Material Grades

Category

Standards

Common Grades

Austenitic

ASTM A312, A358, A249, A269

304/304L, 316/316L, 310S, 321

Duplex

ASTM A789, A790, A928

S31803, S32205, S32750, S32760

Specialty

ASTM B673, B675, B676

904L, 254SMO, Monel, Inconel


3. Key Application Areas

Industrial Infrastructure: Water treatment, desalination, and sewage systems.

Energy & Chemical: Low-pressure petrochemical piping, heat exchangers, and pulp/paper industry.

Construction & Decoration: Architectural structures, handrails, and ornamental tubing.

Food & Sanitary: Beverage production, pharmaceutical lines, and HVAC systems.


4. Finish & Protection

Surface: Pickled, Polished

Ends: Plain, Beveled, or Threaded; protected by plastic caps.

Packing: Sea-worthy hexagonal bundles or wooden cases with waterproof wrapping.

Different Standard for tolerance requests

Specification Application OD Tolerance (mm) WT Tolerance (%) Length Tol (mm) Key Testing Requirements
ASTM-A213 Seamless Boiler/Heat Exchanger ±0.1016 to ±0.381 +20% / -0 +3.175 / -0 Flattening, Flare, Hardness, 100% Hydrostatic
ASTM-A249 Welded Boiler/Heat Exchanger ±0.1016 to ±0.381 ±10% +3.175 to +4.762 Tension, Flattening, Flange, Reverse Bend, Hydro
ASTM-A269 Seamless/Welded General Service ±0.13 to ±0.76 ±10% to ±15% +3.2 to +4.8 Flare (SMLS), Flange (WLD), Hardness, Hydro
ASTM-A270 Sanitary Tubing (Food/Pharma) ±0.05 to ±0.08 ±10% +3.2 Reverse Flattening, 100% Hydro, Surface Polish
ASTM-A312 Seamless/Welded Pipe +0.4/-0.79 to +1.59/-0.79 -12.50% +6.4 / -0 Tension, Flattening, 100% Hydrostatic


Stainless Steel Pipe Size Table Dimension

Nominal Bore Outside         (mm) Sch-5S Sch-10S Sch-40S Sch-80S Sch-160S Sch-XXS
mm INCH Wt (mm) Weight Wt (mm) Weight Wt (mm) Weight Wt (mm) Weight Wt (mm) Weight Wt (mm) Weight
(Kg/mt) (Kg/mt) (Kg/mt) (Kg/mt) (Kg/mt) (Kg/mt)
6 1/8" 10.3 - - 1.24 0.28 1.73 0.37 2.41 0.47 - - - -
8 1/4" 13.7 - - 1.65 0.49 2.24 0.63 3.02 0.8 - - - -
10 3/8" 17.1 - - 1.65 0.63 2.31 0.84 3.2 1.1 - - - -
15 1/2" 21.3 1.65 0.8 2.11 1 2.77 1.27 3.73 1.62 4.78 1.95 7.47 2.55
20 3/4" 26.7 1.65 1.03 2.11 1.28 2.87 1.69 3.91 2.2 5.56 2.9 7.82 3.64
25 1" 33.4 1.65 1.31 2.77 2.09 3.38 2.5 4.55 3.24 6.35 4.24 9.09 5.45
32 1.1/4" 42.2 1.65 1.66 2.77 2.69 3.56 3.39 4.85 4.47 6.35 5.61 9.7 7.77
40 1.1/2" 48.3 1.65 1.91 2.77 3.11 3.68 4.05 5.08 5.41 7.14 7.25 10.15 9.56
50 2" 60.3 1.65 2.4 2.77 3.93 3.91 5.44 5.54 7.48 8.74 11.11 11.07 13.44
65 2.1/2" 73 2.11 3.71 3.05 5.26 5.16 8.63 7.01 11.41 9.53 14.92 14.02 20.39
80 3" 88.9 2.11 4.54 3.05 6.46 5.49 11.29 7.62 15.27 11.13 21.35 15.24 27.68
90 3.1/2" 101.6 2.11 5.2 3.05 7.42 5.74 13.57 8.08 18.63 - - - -
100 4" 114.3 2.11 5.87 3.05 8.38 6.02 16.07 8.56 22.32 13.49 33.54 17.12 41.03
125 5" 141.3 2.77 9.52 3.4 11.59 6.55 21.77 9.53 30.97 15.88 49.11 19.05 57.43
150 6" 168.3 2.77 11.38 3.4 13.86 7.11 28.26 10.97 42.56 18.26 67.56 21.95 79.22
200 8" 219.1 2.77 14.88 3.76 20.08 8.18 42.55 12.7 64.64 23.01 111.27 22.23 107.92
250 10" 273 3.4 22.75 4.19 27.95 9.27 60.31 15.09 96.01 28.58 172.26 25.4 155.15
300 12" 323.8 3.96 31.43 4.57 36.21 9.53 73.88 17.48 132.04 33.32 238.76 25.4 186.91
350 14 355.6 3.96 34.36 4.78 41.3 11.13 94.59 19.05 158.08 35.71 281.7 - -
400 16 406.4 4.19 41.56 4.78 47.29 12.7 123.3 21.41 203.33 40.46 365.11 - -
450 18 457.2 4.19 46.8 4.78 53.42 14.27 155.8 23.8 254.36 45.71 466.4 - -
500 20 508 4.78 59.25 5.54 68.71 15.09 183.42 26.19 311.2 49.99 564.68 - -
600 24 609.6 5.54 82.47 6.35 94.45 17.48 255.41 30.96 442.08 59.54 808.22 - -
Application Category International Standard Common Steel Grades
General Industrial Service ASTM A312 TP304, TP304L, TP316, TP316L, TP321, TP347, TP904L
EN 10217-7 1.4301 (304), 1.4307 (304L), 1.4401 (316), 1.4404 (316L)
Large Diameter / Low Pressure ASTM A358 Class 1 to 5: Grades 304, 304L, 316, 316L, 321
Boiler & Heat Exchanger ASTM A249 TP304, TP304L, TP316, TP316L, TP317L, TP321
Sanitary / Food Industry ASTM A270 TP304, TP304L, TP316L
DIN 11850 1.4301, 1.4307, 1.4404
Duplex Stainless Steel ASTM A928 S31803 (2205), S32205, S32750 (Super Duplex)
Mechanical & Structural ASTM A554 MT304, MT304L, MT316, MT316L (Ornamental/Structural)

Stainless Steel Welded Pipe Production Process

Different Standard for tolerance requests

Specification Application OD Tolerance (mm) WT Tolerance (%) Length Tol (mm) Key Testing Requirements
ASTM-A213 Seamless Boiler/Heat Exchanger ±0.1016 to ±0.381 +20% / -0 +3.175 / -0 Flattening, Flare, Hardness, 100% Hydrostatic
ASTM-A249 Welded Boiler/Heat Exchanger ±0.1016 to ±0.381 ±10% +3.175 to +4.762 Tension, Flattening, Flange, Reverse Bend, Hydro
ASTM-A269 Seamless/Welded General Service ±0.13 to ±0.76 ±10% to ±15% +3.2 to +4.8 Flare (SMLS), Flange (WLD), Hardness, Hydro
ASTM-A270 Sanitary Tubing (Food/Pharma) ±0.05 to ±0.08 ±10% +3.2 Reverse Flattening, 100% Hydro, Surface Polish
ASTM-A312 Seamless/Welded Pipe +0.4/-0.79 to +1.59/-0.79 -12.50% +6.4 / -0 Tension, Flattening, 100% Hydrostatic


Stainless Steel Pipe Size Table Dimension

Nominal Bore Outside         (mm) Sch-5S Sch-10S Sch-40S Sch-80S Sch-160S Sch-XXS
mm INCH Wt (mm) Weight Wt (mm) Weight Wt (mm) Weight Wt (mm) Weight Wt (mm) Weight Wt (mm) Weight
(Kg/mt) (Kg/mt) (Kg/mt) (Kg/mt) (Kg/mt) (Kg/mt)
6 1/8" 10.3 - - 1.24 0.28 1.73 0.37 2.41 0.47 - - - -
8 1/4" 13.7 - - 1.65 0.49 2.24 0.63 3.02 0.8 - - - -
10 3/8" 17.1 - - 1.65 0.63 2.31 0.84 3.2 1.1 - - - -
15 1/2" 21.3 1.65 0.8 2.11 1 2.77 1.27 3.73 1.62 4.78 1.95 7.47 2.55
20 3/4" 26.7 1.65 1.03 2.11 1.28 2.87 1.69 3.91 2.2 5.56 2.9 7.82 3.64
25 1" 33.4 1.65 1.31 2.77 2.09 3.38 2.5 4.55 3.24 6.35 4.24 9.09 5.45
32 1.1/4" 42.2 1.65 1.66 2.77 2.69 3.56 3.39 4.85 4.47 6.35 5.61 9.7 7.77
40 1.1/2" 48.3 1.65 1.91 2.77 3.11 3.68 4.05 5.08 5.41 7.14 7.25 10.15 9.56
50 2" 60.3 1.65 2.4 2.77 3.93 3.91 5.44 5.54 7.48 8.74 11.11 11.07 13.44
65 2.1/2" 73 2.11 3.71 3.05 5.26 5.16 8.63 7.01 11.41 9.53 14.92 14.02 20.39
80 3" 88.9 2.11 4.54 3.05 6.46 5.49 11.29 7.62 15.27 11.13 21.35 15.24 27.68
90 3.1/2" 101.6 2.11 5.2 3.05 7.42 5.74 13.57 8.08 18.63 - - - -
100 4" 114.3 2.11 5.87 3.05 8.38 6.02 16.07 8.56 22.32 13.49 33.54 17.12 41.03
125 5" 141.3 2.77 9.52 3.4 11.59 6.55 21.77 9.53 30.97 15.88 49.11 19.05 57.43
150 6" 168.3 2.77 11.38 3.4 13.86 7.11 28.26 10.97 42.56 18.26 67.56 21.95 79.22
200 8" 219.1 2.77 14.88 3.76 20.08 8.18 42.55 12.7 64.64 23.01 111.27 22.23 107.92
250 10" 273 3.4 22.75 4.19 27.95 9.27 60.31 15.09 96.01 28.58 172.26 25.4 155.15
300 12" 323.8 3.96 31.43 4.57 36.21 9.53 73.88 17.48 132.04 33.32 238.76 25.4 186.91
350 14 355.6 3.96 34.36 4.78 41.3 11.13 94.59 19.05 158.08 35.71 281.7 - -
400 16 406.4 4.19 41.56 4.78 47.29 12.7 123.3 21.41 203.33 40.46 365.11 - -
450 18 457.2 4.19 46.8 4.78 53.42 14.27 155.8 23.8 254.36 45.71 466.4 - -
500 20 508 4.78 59.25 5.54 68.71 15.09 183.42 26.19 311.2 49.99 564.68 - -
600 24 609.6 5.54 82.47 6.35 94.45 17.48 255.41 30.96 442.08 59.54 808.22 - -
Application Category International Standard Common Steel Grades
General Industrial Service ASTM A312 TP304, TP304L, TP316, TP316L, TP321, TP347, TP904L
EN 10217-7 1.4301 (304), 1.4307 (304L), 1.4401 (316), 1.4404 (316L)
Large Diameter / Low Pressure ASTM A358 Class 1 to 5: Grades 304, 304L, 316, 316L, 321
Boiler & Heat Exchanger ASTM A249 TP304, TP304L, TP316, TP316L, TP317L, TP321
Sanitary / Food Industry ASTM A270 TP304, TP304L, TP316L
DIN 11850 1.4301, 1.4307, 1.4404
Duplex Stainless Steel ASTM A928 S31803 (2205), S32205, S32750 (Super Duplex)
Mechanical & Structural ASTM A554 MT304, MT304L, MT316, MT316L (Ornamental/Structural)

Stainless Steel Welded Pipe Production Process

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