NXF GROUP
Phone/Whatsapp:+8613917160311
Email: info@nxf-group.com
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NXF UNS S15700 15-7PH Fe/CR15/Ni 7/Mo 2.25 DN15-1500 SCH10-XXS Special Stainless Steel Lap Joint Stub End
2026-03-18 18:39 NXF GROUP
7
Product Description
Butt-Welding Lap Joint Stub End Introduction
Butt-Welding Lap Joint Stub End Introduction
A lap joint stub end is a type of Buttweld fitting used in piping systems to facilitate easy assembly and disassembly of flanged connections. It's typically used in situations where frequent maintenance, cleaning, or inspection of the piping system is required.The Lap Joint Stub End is a short length of pipe with one end machined to match the outer diameter of a certain pipe size, while the otherend has a slightly larger diameter that allows it to slide over the pipe. This allows for easy alignment and connection with the pipe. The stub end does not have a flange on its end; instead, it has a weld bevel that allows it to be Butt-welded to the pipe.
Stainless Steel - Grade 15-7 Introduction
Stainless Steel - Grade 15-7 Introduction
Stainless steels are high-alloy steels which have high corrosion resistance when compared to other steels due to the presence of large amounts of chromium. They contain about 4-30% of chromium. Based on their crystalline structure, they are further divided into ferritic, austenitic, and martensitic steels. Another group of stainless steels are known as precipitation-hardened steels. They are the combination of martensitic and austenitic steels.
Grade 15-7 stainless steel is a semi-austenitic precipitation hardening stainless steel. It has high strength and moderate corrosion resistance.
Grade 15-7 stainless steel is a semi-austenitic precipitation hardening stainless steel. It has high strength and moderate corrosion resistance.
Butt Welding Lap Joint Stub End Drawing
15-7PH Chemical Composition And Mechanical Properties
Our advantage as follow:
1.We have our own factory, and we can control the cost by producing by ourselves. We have a great advantage in price and can give you the lowest price.
2. We can strictly control the quality. We have production, quality inspection, warehousing and other
departments to coordinate and control the quality.
3. Our biggest advantage is 3S service. Small quantity, short time, special materials.
4.We have excellent quality certificate system and trademark certificate
departments to coordinate and control the quality.
3. Our biggest advantage is 3S service. Small quantity, short time, special materials.
4.We have excellent quality certificate system and trademark certificate
Product processing
Lap joint stub ends are butt-weld pipe fittings, commonly ASME B16.9, manufactured by forming a pipe end—via hot/cold forging,rolling, or stamping—into a perpendicular, flange-like lap. Used with backing flanges to simplify assembly and alignment in, for instance, stainless steel piping systems
Key Processing and Manufacturing Steps:
* Forming : The pipe stub is heated or worked cold to create a right-angle lap at the end, often using specialized hydraulic equipment.
* Types: Manufactured in Short Pattern (MSS-A) for compact spaces and Long Pattern (ANSI B16.9) for standard applications.
* Machining: The lap face is machined with serrations for a proper seal with the backing flange, and the inner corner is often squared or small radius.
* Buttwelding End Preparation: The butt-weld end is beveled according to ASME B16.25 standards.
* Finish/Processing: Products undergo surface treatments such as sandblasting, anti-rust oil, or epoxy coating, and sometimes hot-dipped galvanizing, especially for corrosive environments.
* Forming : The pipe stub is heated or worked cold to create a right-angle lap at the end, often using specialized hydraulic equipment.
* Types: Manufactured in Short Pattern (MSS-A) for compact spaces and Long Pattern (ANSI B16.9) for standard applications.
* Machining: The lap face is machined with serrations for a proper seal with the backing flange, and the inner corner is often squared or small radius.
* Buttwelding End Preparation: The butt-weld end is beveled according to ASME B16.25 standards.
* Finish/Processing: Products undergo surface treatments such as sandblasting, anti-rust oil, or epoxy coating, and sometimes hot-dipped galvanizing, especially for corrosive environments.
* The stub end is welded directly to the piping system using the same material as the pipe, while the backing flange (lap joint flange) spins freely to align bolt holes.
They are utilized in pipelines requiring frequent dismantling, such as in the oil & gas and chemical processing sectors.
They are utilized in pipelines requiring frequent dismantling, such as in the oil & gas and chemical processing sectors.
Specification
Packing & Delivery
To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.
Company Profile
New XiFei (SuZhou) Business Co.,Ltd is one of the leading and most respected manufacturers in China. Our products include metals,machinery, containers, construction materials, mechanical products, electrical systems, and medical accessories.Established in1980, XIFEI has been working diligently ever since to embrace the needs of our global customer base.We work to ensure absolute customer satisfaction. Our team has dedicated itself to perfecting our three core components, "Service, Management and Craftsmanship."
Our advantage:3S Service(Small Quantity/Short Time/Special Material)
Certification
FAQ
1. who are we?
We are based in Jiangsu, China, start from 2021,sell to South Asia(30.00%),Eastern Asia(10.00%),Mid East(10.00%),Eastern
Europe(10.00%),South America(10.00%),Domestic Market(5.00%),North America(5.00%),Northern Europe(5.00%),Central
America(5.00%),Africa(5.00%),Southeast Asia(5.00%). There are total about 101-200 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Pipe,Flange,Steel plate,Pipe fittings,Alloy products
4. why should you buy from us not from other suppliers?
Our advantage:3S Service (Small Quantity/Short Time/Special Material) We have our own factories, quality can be controlled
seriously. We Specialize in manufacturing about 21 years. We have professional testing department and testing equipment.
5. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA；
Accepted Payment Currency:USD,EUR,CAD,HKD,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A;
Language Spoken:English,Chinese
6. Are you trading company or manufacturer ?
We are manufacturer.
7. How long is your delivery time?
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.
8. Do you provide samples ? is it free or extra ?
Yes, we could offer the sample for free charge but need pay the cost of freight.
9. What is your terms of payment ?
Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
We are based in Jiangsu, China, start from 2021,sell to South Asia(30.00%),Eastern Asia(10.00%),Mid East(10.00%),Eastern
Europe(10.00%),South America(10.00%),Domestic Market(5.00%),North America(5.00%),Northern Europe(5.00%),Central
America(5.00%),Africa(5.00%),Southeast Asia(5.00%). There are total about 101-200 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Pipe,Flange,Steel plate,Pipe fittings,Alloy products
4. why should you buy from us not from other suppliers?
Our advantage:3S Service (Small Quantity/Short Time/Special Material) We have our own factories, quality can be controlled
seriously. We Specialize in manufacturing about 21 years. We have professional testing department and testing equipment.
5. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA；
Accepted Payment Currency:USD,EUR,CAD,HKD,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A;
Language Spoken:English,Chinese
6. Are you trading company or manufacturer ?
We are manufacturer.
7. How long is your delivery time?
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.
8. Do you provide samples ? is it free or extra ?
Yes, we could offer the sample for free charge but need pay the cost of freight.
9. What is your terms of payment ?
Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
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