With more than 30 years of casting history, Wenzhou Longzhu Industrial Co., Ltd. has a large number of experienced casting engineers and technicians. We can produce castings of various sizes, shapes and materials according to the drawings provided by customers, especially in the field of valve castings. Cooperate with Fortune 500 companies for many years.
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Resin sand casting, etc.
Sales manager： Mrs.peng E-mail: firstname.lastname@example.org
Tel： 0086-0577-86621768 Fax： 0086-0577-86621935
Address ： No.19 Longyong Road.Xiongxin Village. Longwan,Wenzhou,Zhejiang,China
What makes LongZhu different from other foundries?
LongZhu was founded in 1986 and with 33 years hard working to produce top-quality investment castings with a wide range of metal alloys. With a capital assert of over 85 millions RMB, the company covers a construction area od more than 15800M², holds 280 staffs and 16 engineers. Now is one of the largest foundries in Wenzhou,Zhejiang Province. Our team has the extensive experience, knowledge and commitment to ensure that you will have a truly exceptional customer experience with us. We serve online at 7×24 hours.
For the wide application of valves for pipelines, transportation and industrial production all need valves for controlling, LongZhu foundry is the reliable manufacturer and supplier for valve manufacturers all over the world. We can make all kinds of cast valve components for check valve, butterfly valve, ball valve, gate valve, control valve, globe valve, plug valve, ect.
As a valve parts producer, we are professional in making all kinds of valve components including cast valve body, cast valve disc, cast valve bonnet, cast valve flange, cast valve flange and other valve component castings. According to the material specification and dimensions of valve casting parts, we can make them in different casting methods
What kind of products could be made in sand casting?
sand casting process is suitable for larger products, sand casting is preferred. Weight: 3 tons or less.
What alloys can LongZhu foundry make for sand castings?
LongZhu foundry offers a wide range of alloys selection for sand castings. Common materials used in steel: Alloy steel, carbon steel, Low temperature steel, stainless steel, Duplex stainless steel, ect. Cast iron: alloy cast iron, high chromium cast iron, etc. We can make products following your material specifications or material compositions.
How does LongZhu do quality control for sand casting?
First, we have an area control system in each production process. Secondly, we are equipped with complete test instruments, such as Y-ray detection device, all-digital intelligent ultrasonic flaw detector, low temperature impact tester, desktop, portable Brinell hardness tester, direct reading spectrometer, fluorescent magnetic particle detector, ultrasonic thickness gauge , universal strength testing machine, molten steel thermocouple thermometer, metallographic microscope, etc.Thirdly, sample will be provided before mass production. Also, for mass production, we will select some products randomly for testing. And even if there will be quality problem after delivery, we will also send replacements asap at our own costs or return parts of production payments to our customers directly.