Langfang Pannext Pipe Fitting Co., Ltd. is a Sino-US joint venture specialized in producing high-quality malleable iron pipe fitting and bronze pipe fittings—with malleable iron bushing and other malleable cast products as core offerings. For buyers sourcing these components, understanding key specifications is critical to ensuring compatibility, performance, and long-term value. Langfang Pannext Pipe Fitting Co., Ltd. aligns its products with global standards and transparent specifications, making it easier for partners to select the right solutions for water supply, gas transmission, industrial fluid transport, and other applications.

 

Malleable Iron Bushing Size and Connection Compatibility

 

Malleable iron bushing from Langfang Pannext Pipe Fitting Co., Ltd. is designed to adapt different pipe sizes, so size and connection specifications are non-negotiable when sourcing. First, the bushing’s size range must match the pipe diameters in your system—choosing a mismatched size will lead to leaks or unstable connections. Each size corresponds to precise dimensional standards: for example, the 1/2" EXT05 bushing has a Dimension A of 40.0mm, while the 2" EXT20 model has a Dimension A of 70.0mm, ensuring it fits snugly with corresponding pipes.

 

Product Specification	Tamaño (pulgadas)	Key Dimension A (mm)	Connection Type	Thread Standard	Forma
EXT05	1/2	40.0	Female/Male	NPT, BSP	Reduce
EXT07	3/4	48.0	Female/Male	NPT, BSP	Reduce
EXT10	1	55.0	Female/Male	NPT, BSP	Reduce
EXT12	1-1/4	60.0	Female/Male	NPT, BSP	Reduce
EXT15	1-1/2	65.0	Female/Male	NPT, BSP	Reduce
EXT20	2	70.0	Female/Male	NPT, BSP	Reduce

 

Malleable Iron Pipe Fitting Material and Coating Standards

 

Malleable iron pipe fitting from Langfang Pannext Pipe Fitting Co., Ltd. relies on high-quality materials and coatings to deliver durability—these are core specifications to verify during sourcing. The fitting’s base material is malleable iron that meets ASTM A197, a global standard for malleable iron castings used in pipe fittings. ASTM A197 ensures the material has excellent ductility, impact resistance, and load-bearing capacity—critical for withstanding pressure fluctuations in piping systems.

Coating specification is equally important, as it directly impacts corrosion resistance. malleable iron pipe fitting from Langfang Pannext Pipe Fitting Co., Ltd. features a zinc coating compliant with two key standards: SI 918 and ASTM A 153. This hot-dip zinc coating forms a uniform barrier against moisture, salt, and chemicals—extending the fitting’s service life in harsh environments. Buyers should confirm coating compliance, as substandard coatings lead to premature rust and replacement costs.

 

Product Specification	Base Material	Material Standard	Coating Type	Coating Standards	Corrosion Resistance Scope
All EXT Series Models	Malleable iron	ASTM A197	Hot-dip zinc	SI 918, ASTM A 153	Moisture, salt, general chemicals

 

Malleable Cast Craftsmanship and Quality Testing

 

Malleable cast is the manufacturing foundation for both malleable iron bushing y malleable iron pipe fitting, so craftsmanship and quality testing specifications are vital when sourcing. Langfang Pannext Pipe Fitting Co., Ltd. uses advanced casting technology with strict process controls: raw malleable iron is melted at precise temperatures, poured into precision molds, and cooled at a controlled rate to avoid defects like porosity, cracks, or uneven density. Post-casting, all malleable cast products undergo thermal treatment to enhance ductility—this step ensures the components can withstand slight deformation without breaking, a key advantage over brittle traditional cast iron.

 

Malleable Iron Bushing and Malleable Iron Pipe Fitting Packaging and Quantity

 

Packaging and quantity specifications are often overlooked but critical for logistics, storage, and cost efficiency when sourcing. Langfang Pannext Pipe Fitting Co., Ltd. offers standardized packaging for malleable iron bushing y malleable iron pipe fitting to ensure safe transport and easy inventory management. Each product is packed in inner cases and master cases, reducing damage during shipping. For example, the 1/2" EXT05 bushing has 60 units per inner case and 360 per master case, while the 2" EXT20 model has 20 units per inner case and 40 per master case.

Buyers should align quantity specifications with their production or project needs. Langfang Pannext Pipe Fitting Co., Ltd. also offers Special Case quantities to accommodate smaller or larger orders, ensuring flexibility without compromising packaging integrity. Confirming packaging materials and quantity per case helps avoid overordering, stockouts, or shipping damage—all of which increase sourcing costs.

 

Product Specification	Tamaño (pulgadas)	Master Case Qty	Inner Case Qty	Special Case (Master/Inner)	Packaging Material
EXT05	1/2	360	60	300/75	Heavy-duty cardboard
EXT07	3/4	200	50	160/40	Heavy-duty cardboard
EXT10	1	120	30	90/30	Heavy-duty cardboard
EXT12	1-1/4	80	20	60/30	Heavy-duty cardboard
EXT15	1-1/2	60	20	40/20	Heavy-duty cardboard
EXT20	2	40	20	30/15	Heavy-duty cardboard

 

Malleable Iron Pipe Fitting FAQS

 

What size specifications matter most for malleable iron bushing?

 

The most critical size specifications for malleable iron bushing from Langfang Pannext Pipe Fitting Co., Ltd. are nominal size and key dimensions. Nominal size must match the pipe diameters in your system—for example, a 1" bushing works only with 1" pipes. Key dimensions like Dimension A ensure the bushing fits snugly with pipes and adjacent fittings. Additionally, confirm the bushing’s shape to ensure it fits your installation space—mismatched size or shape leads to leaks and installation delays.

 

Why is ASTM A197 important for malleable iron pipe fitting?

 

ASTM A197 is critical for malleable iron pipe fitting from Langfang Pannext Pipe Fitting Co., Ltd. because it sets strict standards for the fitting’s material properties. This standard ensures the malleable iron has sufficient ductility to avoid brittleness, impact resistance to handle minor shocks, and strength to withstand operating pressures. Without ASTM A197 compliance, fittings may crack under pressure or break during installation—leading to system failures, water/gas leaks, and costly repairs. Choosing ASTM A197-compliant fittings guarantees consistent performance across your piping system.

 

How do coating standards protect malleable cast products?

 

Coating standards SI 918 and ASTM A 153 protect malleable cast products from Langfang Pannext Pipe Fitting Co., Ltd. by ensuring the zinc coating is uniform, thick, and well-adhered. SI 918 specifies coating thickness to prevent thin spots that allow corrosion, while ASTM A 153 ensures the coating bonds tightly to the malleable iron surface—avoiding flaking or peeling. Together, these standards create a barrier that blocks moisture, salt, and chemicals from reaching the base metal, preventing rust and extending the product’s service life in harsh environments like underground or coastal installations.

 

What packaging specifications should I check for malleable iron bushing?

 

When sourcing malleable iron bushing from Langfang Pannext Pipe Fitting Co., Ltd., check three key packaging specifications: packaging material, master case quantity, and inner case quantity. The packaging material should be heavy-duty cardboard to resist crushing during shipping, protecting the bushings from damage. Master case and inner case quantities  help you calculate how many cases you need to meet your order volume. Also, confirm if Special Case quantities are available if your needs are smaller or larger than standard—this ensures you avoid excess inventory or stockouts.

 

Why is quality testing necessary for malleable iron pipe fitting?

 

Quality testing is necessary for malleable iron pipe fitting from Langfang Pannext Pipe Fitting Co., Ltd. to eliminate faulty products that risk system failure. Dimensional accuracy testing ensures the fitting matches size specifications, so it fits with pipes and other components. Coating thickness testing confirms the zinc layer meets standards, preventing premature corrosion. Pressure resistance testing verifies the fitting can handle operating pressures without leaking—critical for safety in gas or high-pressure fluid systems. Without these tests, you may unknowingly source fittings that crack, leak, or rust early, leading to costly downtime and repairs.

 

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Post time: Ago-28-2025