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Stainless Steel Butt Welded Flanging Loose Sleeve Looper Stub Carbon Steel Alloy Seamless Flanging

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Stainless Steel Butt Welded Flanging Loose Sleeve Looper Stub Carbon Steel Alloy Seamless Flanging

Brand Name : YUHAO

Model Number : Butt Weld Pipe Fittings

Certification : ASTM, AISI, GB, DIN, JIS,EN

Place of Origin : China

MOQ : 100kgs

Price : Negotiation

Payment Terms : L/C,D/A,D/P,T/T,Western Union,MoneyGram

Supply Ability : 2000tons/per month

Delivery Time : 15days

Packaging Details : Standard sea worth bundles,Standard Plywood cases

wall thickness : SCH 5s-SCH XXS

customized support : OEM, ODM, OBM

surface treatment : Mirror, Polishing, Sandblasting, Sand rolled.

Connection Type : Butt Welded

Application : Oil, Gas, Chemical, Petrochemical, Power, etc.

Packing : PLY-wooden case or pallet or as for clients' requirements.

Standard : EN, ASTM, AISI, DIN, JIS

Grade : 304, 304L, 316, 316L, 410, 420, 439

Service : Product Customization

Size : 1/2" up to 48"

Type : Long or Short

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Stainless Steel Butt Welded Flanging Loose Sleeve Looper Stub Carbon Steel Alloy Seamless Flanging



►Products description

Our stainless steel butt welded stub ends are meticulously crafted to create flawless connections between pipes and lap joint flanges. Manufactured from premium 304, 316, 316L, 321, and duplex stainless steels, these critical components deliver:

  • ​​Perfect Flange Alignment:​​ CNC-machined surfaces ensure exact matching with lap joint flanges
  • ​​System Maintenance Efficiency:​​ Enables quick disassembly without pipe cutting
  • ​​Pressure Integrity:​​ Rated for ANSI Class 150 to 2500 applications
  • ​​Superior Corrosion Resistance:​​ Ideal for chemical processing, offshore, and high-temperature services


​​Advanced Manufacturing Excellence:​​
We set industry standards through:

Cutting-Edge Production:​​

  • 5-axis CNC machining centers with micron-level precision
  • Automated orbital welding with full radiographic testing
  • Complete in-house heat treatment capabilities


​​Uncompromising Quality Standards:​​

  • 100% dimensional verification to ASME B16.25 specifications
  • Full material traceability with certified mill test reports
  • Optional PMI testing and comprehensive NDE services


​​Our Competitive Advantages:​​

  • ​​Global Supply Network:​​ Reliable worldwide distribution
  • ​​Technical Excellence:​​ Dedicated engineering support team


​​Material Specifications:​​

  • Available Grades: 304, 316/L, 321, 347, 904L, Duplex 2205, Super Duplex 2507
  • Sizes: 1/2" to 60" diameters
  • Pressure Ratings: Class 150 to 2500
  • Surface Finish: Standard mill finish to 32Ra micro-finish


Trust our stainless steel butt welded stub ends for your most demanding flange connection requirements. Our engineering team provides complete technical support from specification to installation.


►Industry-specific attributes

Place of Origin China
Brand name Yuhao
Connectivity Welding
Size 1/2" up to 48"
Wall thickness SCH 5s-SCH XXS
customized Support ASTM DIN EN BS JIS GOST etc.
Surface treatment Sand blasting, Roll blasting, Pickled or Polished
Type Long or Short
Pressure High Pressure
Packing Cartons, Pallet, Cases


►Product Size

DN NPS OD Nominal Wall Thickness
Schss Sch10S Sch405 Sch8os Sch10 Sch20 Sch30 STD Sch40 Sch60 XS
6 1/8 10.3 - 1.24 1.73 2.41 - - - 1.73 1.73 - 2.41
8 1/4 13.7
1.65 2.24 3.02 - - - 2.24 2.24 - 3.02
10 3/8 17.1 - 1.65 2.31 3.2 - - - 2.31 2.31 - 3.2
15 1/2 21.3 1.65 2.11 2.77 3.73 - - - 2.77 2.77 - 3.73
20 3/4 26.7 1.65 2.11 2.87 3.91 - - - 2.87 2.87 - 3.91
25 1 33.4 1.65 2.77 3.38 4.55 - - - 3.38 3.38 - 4.55
32 1 1/4 42.2 1.65 2.77 3.56 4.85 - - - 3.56 3.56 - 4.85
40 1 1/2 48.3 1.65 2.77 3.68 5.08 - - - 3.68 3.68 - 5.08
50 2 60.3 1.65 2.77 3.91 5.54 - - - 3.91 3.91 - 5.54
65 2 1/2 73 2.11 3.05 5.16 7.01 - - - 5.16 5.16 - 7.01
80 3 88.9 2.11 3.05 5.49 7.62 - - - 5.49 5.49 - 7.62
90 3 1/2 101.6 2.11 3.05 5.74 8.08 - - - 5.74 5.74 - 8.08
100 4 114.3 2.11 3.05 6.02 8.56 - - - 6.02 6.02 - 8.56
125 5 141.3 2.77 3.4 6.55 9.53 - - - 6.55 6.55 - 9.53
150 6 168.3 2.77 3.4 7.11 10.97 - - - 7.11 7.11 - 10.97
200 8 219.1 2.77 3.76 8.18 12.7 - 6.35 7.04 8.18 8.18 10.31 12.7
250 10 273 3.4 4.19 9.27 12.7 - 6.35 7.8 9.27 9.27 12.7 12.7
300 12 323.8 3.96 4.57 9.53 12.7 - 6.35 8.38 9.53 10.31 14.27 12.7
350 14 355.6 3.96 4.78 - - 6.35 7.92 9.53 9.53 11.13 15.09 12.7
400 16 406.4 4.19 4.78 -
6.35 7.92 9.53 9.53 12.7 16.66 12.7
450 18 457 4.19 4.78 - - 6.35 7.92 11.13 9.53 14.27 19.05 12.7
500 20 508 4.78 5.54 - - 6.35 9.53 12.7 9.53 15.09 20.62 12.7


►Factroy Shoot

Stainless Steel Butt Welded Flanging Loose Sleeve Looper Stub Carbon Steel Alloy Seamless Flanging

Stainless Steel Butt Welded Flanging Loose Sleeve Looper Stub Carbon Steel Alloy Seamless Flanging

Stainless Steel Butt Welded Flanging Loose Sleeve Looper Stub Carbon Steel Alloy Seamless Flanging


►FAQ

Q1: Can you provide the free samples?

A: We can supply the free samples but the sample express freight need paid by yourside.

Q2: What about your delivery time if we placed order?

A: We have large of ready stock,in general we can delivery within 2-10days.

Q3: How long is your production lead time?

A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.

Q4: How is the quality about the products?

A: Quality is priority. We pay much attention to the quality check. Every product will be fully assembled and carefully tested before it's packed for shipment.

Q5: What is your minimum order quantity?

A: The MOQ for each product is different, so it would be recommended to refer to the detail page of the product you are interested in. If you need further clarification, send me the product link, and I will reply as soon as possible.


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