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NXF UNS A36 S235JR/St37-2/SS400 OD DN15-1200 Pressure Class 3000-9000 Forging Fitting Threaded Straight Haxagonal Nipple
2026-08-21 17:06 NXF GROUP
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Product Description
A36 Introduction
ASTM A36 is the most commonly used mild and hot-rolled steel. It has excellent welding properties and is suitable for grinding, punching, tapping, drilling and machining processes. Yield strength of ASTM A36 is less than that of cold roll C1018, thus enabling ASTM A36 to bend more readily than C1018. Normally, larger diameters in ASTM A36 are not produced since C1018 hot roll rounds are used.Straight Haxagonal Nipple Introduction
A36 Straight and Reducing Hexagonal Nipple is a carbon‑steel threaded pipe fitting designed for industrial pipeline connection. Made of A36 carbon steel, a common structural steel material with good tensile strength and excellent machinability, this nipple is suitable for non‑corrosive working conditions without strict anti‑rust requirements. The straight hexagonal nipple has identical male threads on two ends, used to connect pipelines of the same size. The reducing hexagonal nipple features two different thread sizes on both sides, realizing diameter transition between two pipelines. The middle hexagonal section provides stable clamping position for wrenches during installation and disassembly. Precision CNC turning guarantees accurate thread dimension. Available thread types cover NPT and BSPP standards. Common surface treatments include black oxide, galvanization or plain finish to enhance rust resistance as required. Galvanized treatment is recommended for outdoor and humid environments. This series of nipples is widely used in machinery, fuel transmission, water supply, hydraulic pipelines and general industrial equipment. Compared with stainless‑steel fittings, A36 carbon‑steel hexagonal nipples offer cost advantages while meeting basic mechanical performance. Users should take extra anti‑corrosion measures when applied in damp or chemical‑containing media.
Straight Haxagonal Nipple Drawing
A36 Chemical Composition and Mechanical Properties
Factory and Product Pictures
Straight Haxagonal Nipple Product Pictures
A36 PMI spectral testing proves
Video of a customer visiting us
Product processing
Straight Haxagonal Nipple Product Processing
1. Raw Material Inspection
A36 carbon‑steel round bars are received for incoming inspection.
Sampling chemical composition and hardness tests are performed. Raw materials that do not meet A36 standard requirements are rejected to guarantee basic tensile strength and weldability.
Sampling chemical composition and hardness tests are performed. Raw materials that do not meet A36 standard requirements are rejected to guarantee basic tensile strength and weldability.
2. Cutting
Steel bars are cut into fixed‑length blanks. For straight
nipples, blanks have equal reserved diameter on both ends. For reducing nipples, one side reserves extra machining allowance for the smaller thread.
nipples, blanks have equal reserved diameter on both ends. For reducing nipples, one side reserves extra machining allowance for the smaller thread.
3. CNC Turning
Blanks are processed by CNC lathe. The middle hexagonal clamping surface, outer contour and end
faces are shaped precisely. Hex flats are machined flat to prevent wrench slipping during installation.
faces are shaped precisely. Hex flats are machined flat to prevent wrench slipping during installation.
4. Thread Machining
Both ends are threaded with NPT or BSPP threads. Straight nipples adopt the same thread specification on two sides. Reducing nipples are machined into two different thread sizes. Thread tolerances are strictly controlled with thread gauges.
5. Deburring & Surface Treatment
All sharp burrs are removed. A36 carbon steel is easy to rust, so surface treatment such as hot‑dip galvanizing, electro‑galvanizing or black oxide is carried out to improve corrosion resistance. Bare finish without anti‑rust coating needs oil protection.
6. Optional Marking
Size information, material mark “A36” and brand logo can be stamped or laser marked on the hexagonal body as customer’s requirements.
7. Finished‑product Quality Check
Each nipple goes through dimension measurement, thread go‑no‑go test and visual inspection. Defective products with deformed threads or surface flaws will be eliminated.
8. Export Packing
Qualified parts are coated with anti‑rust oil, then packed properly to avoid scratches and rust during
long‑distance ocean transportation.
long‑distance ocean transportation.
Our NXF GROUP Advantage As Follow:
1.Our NXF GROUP 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 based on best quality. 2.Our NXF GROUP can strictly control the quality. We have production, quality inspection, warehousing and other departments to coordinate and control the quality,Such as PMI and size testing.
3.Our NXF GROUP biggest advantage is 3S service. Small quantity, short time, special materials.
4.Our NXF GROUP have excellent quality certificate system and trademark certificate
5.Our NXF GROUP have a comprehensive after-sales service guarantee, such as the transaction guarantee provided by Alibaba International Station, as well as remote technical guidance and services.
6.Our NXF GROUP have a well-established logistics support system that can save you both time and money, providing you
with a one-stop service.
Packing & Delivery
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 in 1980, 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."
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,DDP,DDU；
Accepted Payment Currency:USD,EUR,CAD,HKD,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A,Credit Card,PayPal;
Language Spoken:English,Chinese,Spanish,Russian
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,DDP,DDU；
Accepted Payment Currency:USD,EUR,CAD,HKD,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A,Credit Card,PayPal;
Language Spoken:English,Chinese,Spanish,Russian
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