3/4 black steel pipe Fittings


Product Description

Product Detail

Black heart malleable iron
American Standard
ANSI B1.20.1
ASME B 16.3, B16.14.
British Standard
ISO 7/1
BS EN 10242, BS 143&1256
DIN Standard
ISO 7/1
ISO 49, DIN2950, EN10242
Chemical property
(C %2.4-2.9), (Si %1.4-1.9), (Mn %0.4-0.65),(P% <0.1), (S% <0.2%)
Physical property
Tensile strength >=350MPa, Elongation >=10%,Hardness <=150HB
Banded without ribs,Beaded with ribs,Beaded without ribs
Normal black/Shining black
Heavy, standard, medium, light
Suitable for Pipe lines connect of steam, air, gas, oil and so on.

In the field of china pipe fitting manufacturers, we have successfully created a variety of high-profile products with deep professional accumulation and continuous technological innovation. Black iron fittings uses advanced technology, is loved by people in the industry, and is developed in strict accordance with international standards. We understand the importance of diversifying our needs, and we have a comprehensive and distinctive range of product lines to meet the specific needs of our customers. Our professional team has a deep understanding and rich practical experience in the field of black iron fittings, helping every customer to solve problems, create value, and move towards a successful future together.


Corrosion Resistance: The black coating on steel provides a certain degree of corrosion resistance, although it’s advisable to keep the environment in mind as they can rust over time if exposed to moisture.

High Temperature Tolerance: They can withstand high temperatures, making them ideal for heating systems as well as hot water lines.

Compatibility: These fittings are compatible with a wide range of piping systems and are commonly used for both gas and liquid transportation.

Ease of Use: The threaded ends of black steel pipe fittings allow for easy installation and a secure fit without the need for specialized tools

Versatility: They can be used across residential, commercial, and industrial plumbing installations, providing a versatile solution for pipelines.

Why Choose Us

Black steel is known for its strength and longevity, which means fittings made from this material are able to withstand a lot of wear and tear.They are typically less expensive than fittings made of more premium materials, offering a budget-friendly option without compromising on performance.These fittings are suitable for many applications, from residential plumbing to industrial pipe systems, conveying water, gas, steam, and oil.


1. who are we?
Founded in 1982, Jianzhi is a leading manufacturer and supplier of cast iron pipe fittings. Till now, Jianzhi has about 4,500 employees and more than 350 technical engineers with distributors covering over 100 countries around the world.Jianzhi is committed to building a safer world by bringing premium cast iron pipe fittings to every household and building.
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?
Construction Hardware, Auto Parts, Pump and Valve Parts, Impellers,Other Machinery Parts
4. why should you buy from us not from other suppliers?
A leader covers an area of 1400000 square meters and has around 100 staff numbers.

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