Black Iron Pipe Plugs
Black iron pipe plugs are one malleable iron fittings. we can machine BS thread and NPT thread, Male thread, has plain type 291 and beaded type 290, the size from 1/4” up to 4”, Used to close the pipe end at the end of the pipe connection or to reserve a pipe interface for the future. About the surface, we can produce blacking fittings, electric galvanize and hot dip galvanized. It is easy and convenient to install and disassemble. These fittings suggest purchasing with other malleable fittings, like cast iron elbow, cast iron tee, cast iron sockets, cast iron nipples and so on fittings, good for wholesale and distribute, the quality of our fitting is the best in china, but the price is very reasonable, it can bring you big profit for distributing our JIANZHI BRAND fittings, our thread accuracy is very high, the standard regulates the deviation of these is +-1, but to chase high quality and convenient for the user, we increase the deviation to +-0.5, not any other manufacturers can reach this in the same industry factories, If you want to confirm, welcome our factory for a visit or ask for samples to check.
Kirjeldus
Hebei Jianzhi Casting Group Co., Ltd is one of the main Chinese manufacturers of malleable iron fittings since 1982. Process-focused quality management with "Jianzhi" brand that has been one of the “Chinese Well-known Trademark"Quality malleable iron pipe fitting from "Jianzhi" with cost-effective installations.
More than 4,000 employees, 300 more experts, engineers, and technicians. Power of practical action "Either Quit or do it well" and aim to create the international trademark
Black iron pipe plugs is one of malleable iron fittings.we can machining BS thread and NPT thread,Male thread,it has plain type 291 and beaded type 290,the size from 1/4” up to 4”,Used to close the pipe end at the end of the pipe connection or to reserve a pipe interface for the future.
Technical Data
Pressure:≥ 2.0MPA CLASS 150
Maximum Temperature: 200°C (392°F)
Tensile Strength:≥300MPA
Hardness:< HB150 (Brinell)
Elongation Rate: ≥6%
Jianzhi brand malleable iron fittings are of high quality, the standard is BS EN 10242, and the thread is BS, NPE.DIN, ISO228 standards, the pressure 2.5Mpa, we have a light, medium, and heavy type, banded and beaded, suitable for different customerrequestst.
Our package is cartons, one big outside cartons and two small cartons inside, each small cartons also has plastic bags, after sealed well packed by pallet, and then sealed by many layers film, this is very durable in transportation, to keep the fittings from damage and assure the fittings come into customer's hand perfectly.
Our service
The professional trade team supports our clients with cost-effective solutions.
Quality confirmed with 40 years of producing experience and UL listed and FM approved.
Stable delivery time with a large quantity of stock material.
What are the characteristics of malleable steel pipe fittings?
Jianzhi malleable steel pipe fittings have many advantages such as excellent material, good toughness, low rate of trachoma, deep thread, etc. Masteel strictly controls product quality, from material control to packaging inspection, to achieve the best product performance.
We adopt the dual smelting technology of blast furnace smelting and electric furnace adjustment. The element content of each ladle of molten iron is tested by a spectrometer, and the temperature is measured and recorded before pouring. Strictly control each unit to make Shanxi Magang steel pipe fittings better. The product is more resilient.
Malleable steel pipe fittings have six inspections, two inspections and one inspection in the whole process.
Six inspections include pre-return inspection before and after rough throwing, inspection before flat opening after shot blasting, rough inspection before galvanizing, inspection after galvanizing, inspection before machining and final inspection before packaging.
The second check refers to the fact that technicians randomly check products up to 10 times a day in the workshop for destructive inspection. There are 3 technicians in the machining workshop to check the precision and angle of the threaded fasteners of each machine non-stop every day.
Introduction to the fluidity of malleable steel pipe fittings casting
The fluidity of molten iron mainly depends on the carbon equivalent and pouring temperature, and has nothing to do with the shape of graphite. In the case of the same carbon equivalent, there is no significant difference in the fluidity of flake graphite, vermicular graphite and nodular graphite cast iron. However, the carbon equivalent of vermicular graphite cast iron is higher, and its strength is higher than that of high-strength gray cast iron with low carbon equivalent. Therefore, under the same tensile strength, the fluidity of vermicular graphite cast iron is much higher than that of gray cast iron.
From the fluidity test results of various cast irons, it can be seen that even if the pouring temperature of malleable steel pipe fittings is slightly lower than that of alloy cast iron, its fluidity is far greater than that of alloy cast iron. There is not much difference in their mobility.
The first inspection refers to the implementation of the laboratory record mechanism for the element content of each package of molten iron. The geometric dimensions are more precise, the number of threads is more, and the chamfers are more beautiful.
Introduction to the diameter of malleable steel pipe fittings
For pipe fittings with a diameter of more than 254t/tin and above the thread position of the malleable steel pipe fittings, a hidden riser with a diameter 2-4 times that of the feeding heat joint should be set on the parting surface for feeding. Since the wall thickness of malleable iron pipe fittings is relatively thin , the feeding distance of the riser can only reach the hot joint of the thread position associated with it, and cannot reach another thicker thread position across the thin wall. For large parts with a diameter > 76.2MM, two risers must be provided at the thick end of the same thread on the parting surface.
Introduction to Hollow Structure of Malleable Steel Fitting Model
For some simple but large thick castings, such as bulky heads, couplings, anvils, bases, etc., it is a good molding method to adopt a hollow structure. Generally, the upper and lower parts can be covered with plates with a thickness of about 30 mm. The thickness of the surrounding plates should be determined according to the strength of the spring sand. The circumference is bonded with several arc-shaped plastic plates with a thickness of 40-60 mm. up. Castings such as this bulky head and the pillow seat at the back, if the foam plastic model is made solid, it will not only waste material, but also produce a large amount of gas and smoke when pouring, which will affect the quality of the casting. Therefore, the molding form of this hollow structure can be used for the above-mentioned simple shapes and thick-walled casting models with a general wall thickness exceeding 100 mm. In fact, in our solid casting production, the hollow structure is generally inferior to the plastic-wood structure, and it is also an economical and reasonable mold-making structure.
Kuum tags: black iron pipe plugs
