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The Buttweld Barrel Nipple Weight Chart is an important tool to learn about by buyers, engineers and procurement professionals working on piping systems. Correct data about dimensions, tolerances and weight aid in making appropriate material choices, load calculations, safe installation, and industry-appropriate compliance.
This guide includes Buttweld Barrel Nipple Weight Chart in Kg, dimensional tolerances, angularity limits as well as availability information in a well organized and user friendly format.
What Is a Buttweld Barrel Nipple?
A buttweld barrel nipple is a short pipe fitting with beveled ends on both sides, which is designed to be welded directly into a piping system. It is usually applied to join pipes, flanges and valves with high strength, permanent and leak-proof joints. The fittings find large application in oil and gas, petrochemical, power, and industrial piping.
Why Weight Charts Are Important for Buyers
A Buttweld Barrel Nipple Weight Chart in kg and MM enables the buyer to determine the quantity of materials required and prevent overruns on costs. There are also weight charts that are important in transportation planning, lifting calculations and structural load assessment.
The accuracy of weights is particularly relevant when it comes to large piping projects in which any minimal difference in the weight of any particular material may have huge effects on the system as a whole.
ASME B16.9 Buttweld Barrel Nipple Weight Chart
Below is a standard reference Buttweld Barrel Nipple Weight Chart as per ASME B16.9. Weights are approximate and may vary depending on material grade and wall thickness.
| Nominal Pipe Size (NB) | Outside Diameter (MM) | Length (MM) | Approx Weight (KG) |
| ½” | 21.34 | 100 | 0.35 |
| ¾” | 26.67 | 100 | 0.48 |
| 1” | 33.40 | 100 | 0.70 |
| 1½” | 48.26 | 100 | 1.30 |
| 2” | 60.33 | 100 | 1.90 |
| 3” | 88.90 | 100 | 3.80 |
| 4” | 114.30 | 100 | 5.60 |
| 6” | 168.28 | 100 | 10.90 |
This table is widely used as a Buttweld Barrel Nipple Weight Chart in Kg for general estimation purposes.
Dimensional Tolerances Of Fittings (In MM)
As per ASME B16.9, dimensional tolerances ensure proper fit-up and weld integrity during installation.
| Nominal Pipe Size (NB) | Outside Diameter Tolerance (MM) | Length Tolerance (MM) |
| Up to 2” | ±1.0 | ±3 |
| 2½” to 4” | ±1.5 | ±3 |
| 5” to 8” | ±2.0 | ±5 |
| 10” and Above | ±3.0 | ±5 |
These tolerances are critical for ensuring alignment and reducing welding defects in piping systems.
ASME B16.9 SS Barrel Nipple Angularity Tolerance
Angularity tolerance defines the acceptable deviation from perfect alignment at the beveled ends. Maintaining angularity limits ensures proper welding and minimizes stress concentration.
| Nominal Pipe Size (NB) | Angularity Tolerance |
| Up to 4” | ±1° |
| 5” to 8” | ±1.5° |
| 10” and Above | ±2° |
Following these angularity limits improves joint strength and long-term performance.
Stainless Steel Barrel Nipple Types and Forms Availability
Stainless steel barrel nipples come in many varieties and designs to accommodate the demands of the applications. Customers are able to choose among pressure rating, corrosion resistance, and requirements to install.
Common availability includes:
- Seamless barrel nipples
- Welded barrel nipples
- Short barrel nipples
- Long barrel nipples
- Individual lengths for drawing.
Material grades can also be had in a wide variety of stainless steel specifications in order to meet industrial requirements.
How Buyers Should Use Buttweld Barrel Nipple Weight Charts
In the case of Buttweld Barrel Nipple Weight Charts, it is always vital to confirm the pipe size, length, schedule, and grade of material. In the case of critical applications, mill test certificates and dimensional inspection reports should be used to verify weights.
Correct application of Buttweld Barrel Nipple Weight Chart in kg and MM will result in correct procurement, less wastage, and easy handling of projects.
Conclusion
The Buttweld Barrel Nipple Weight Chart, dimensional tolerances, angularity limits, and product availability are important to make proper purchasing decisions. Standardized Buttweld Barrel Nipple weight Charts allow buyers to gain greater cost control, accuracy in installation, and reliability in the use of the system in the long term in industrial piping projects.