Reducer Concentric, Diam:10"x8" ,Sch: S-10S/S-10S ASME B16.9 ASTM A403-SMLS Gr. WP316L(UNS S31603)..

brief introduction

The big and small heads whose center is in a straight line are called concentric big and small heads. The commonly used forming process is reduced diameter pressing, expanded diameter pressing or reduced diameter plus expanded diameter pressing. Stamping can also be used for reducing pipes of some specifications.

distribution characteristics

(1) The bending moment caused by the area pressure difference between the large and small ends of concentric reducer under the action of internal pressure causes the relative opening of the large end and the relative contraction of the small end;

(2) Under the action of internal pressure, the circumferential stress on the inner surface of the large end on the eccentric side and the outer surface of the middle part on the eccentric side of the eccentric reducer is the largest.

Corrosion resistance

General corrosion

Compared with 18-8 stainless steel, 316L and 317L have better corrosion resistance in atmospheric environment and other mild environments. Generally speaking, media that do not corrode 18-8 stainless steel will not corrode the grade containing molybdenum. The only exception is high oxidizing acids, such as nitric acid. Stainless steel containing molybdenum has weak corrosion resistance to this acid. In sulfuric acid solution, 316 and 317L have better corrosion resistance than other chromium nickel types. Both grades have good corrosion resistance to high concentration solutions at temperatures up to 120 ° f (38 ° C). Of course, testing during use is essential because operating conditions and acidic contaminants can seriously affect the corrosion rate. When concentrating sulfur-containing gas, these two grades have better corrosion resistance than other types of stainless steel. However, in such applications, the effect of acid concentration on corrosion rate is quite large, which should be carefully considered. Molybdenum containing stainless steel 316 and 317L have certain corrosion resistance to other environments. The following corrosion data show that these alloys show superior corrosion resistance in boiling 20% phosphoric acid solution. They are also widely used in the treatment of thermal organic acids and fatty acids. Stainless steel containing molybdenum is usually used in the manufacture and treatment of food and pharmaceutical products, because metal pollution should be minimized. Generally speaking, under the same environmental conditions, 316L can be regarded as equivalent to 317L. However, in the environment that can cause intergranular corrosion in welding and heat affected zone, it is an exception. In such media, 316L and 317L are more often selected because they have low carbon content and can improve intergranular corrosion resistance.

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We are one of the Professional manufacturers Exporter Pipeline products in China .Our company was established in 1998, the plant covers 550, 000 square meters and a construction area of 6,8,000square meters, existing 260 workers and 45 technicians.

We have five branch factories which can supply the best quality pipes, tubes, fittings flanges and related accessories. Now, it owns a number of advanced pipe production equipments, metal, forging, machining, cold forming, hot extrusion, such as heat treatment process, producing 60, 000 tons of pipe fittings. Company with a variety of detection devices, such as nondestructive testing, chemical analysis, metallographic examination, physical experiments. The technical is very strength, our main products contain fittingsforged socket welding fittings and threaded fittings, pipe weld and the materials of the products contain stainless steel ,duplex-stainless steel alloy steel.

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(stainless steel/carbon steel/alloy steel/galvanized steel/aluminium )

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(ball valve/gate valve/butterfly valve/globe valve/swing check valve/ check valve)

In order to comply with the global modernization services development trends and eliminating the varieties distress of the global enterprise‘s purchase in the consumables.. We coordinate the pressure pipe manufacturer which with the scale of production,quality control and high cost performance (has passed ISO 9001 quality series attestation, ccs, DNV,PED/97/23/EC,AD2000-WO,special equipment manufacturing license,ASME-SA182.through a variety of effective assort mechanism to make up the shortage of supply and Post-processing of VAT enterprise, and to supply high quality pipe fittings, because of the superior quality and good service, we have established long term business cooperation with more than 60 countries and areas,which covers Europe, Africa, South America, North America, Middle East, Taiwan and South East Asia and so on.

With many years effort and support from our valuable customers, these products have obtained a big market share in the world.

Our business principle is "Superior quality, Competitive price, Timely delivery and Considerate service " Standing to the principle of “Enterprises focus on the core business”, TOBO will actively promotes the globalization of business strategy approach, using advanced supply chain management technology to service for clients with higher quality and more competitiveness ‘ s products. At the same time, we sincerely reply your inquiry, honesty waiting for your visiting and wish to have cooperation with you at the any time. We welcome all the customers to contact us for more information. We assure you, with our technical knowledge and experience, our company will be one of your Stable, Continuate business parters in China.

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