Superhigh Pressure Testing Pipeline

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Superhigh Pressure Testing Pipeline

Q: Who include who btween them?: Fasteners are said from the point of view of the action, which contains both standard parts (GB ANSI ASME DIN EU JIS, etc.) and non-standard parts (according to the drawings) is not entirely a concept

Q: What are some of the common fastener products?: Assembly This fastener is used to assemble the supply, for example, can be a machine screw and flat washers combined use; connection of this fastener is to love you a special bolt, nuts and washers Combined use, for example, steel structure with high strength hexagon head bolts connected vice.

Q: what parts do Fasteners include: Screw: also by the head and screw two parts of a class of fasteners, according to the use can be divided into three categories: machine screws, set screws and special purpose screws. The machine screw is mainly used for a fastening screw hole part, with a through hole between the parts of the fastening connection, no nut matching (this connection is called the screw connection, also belong to the detachable connection; Used in conjunction with nuts for fastening connections between two parts with through holes.) The locking screw is mainly used to hold the relative position between the two parts. Special purpose screws such as rings are used for lifting parts.

Q: Fasteners often say that the nature of galvanized oxidation is what it means: True color means that the surface of the fastener is not treated. Galvanized refers to non-zinc easily oxidized metal fastener surface coated with a layer of zinc, the role is to prevent its rust. Oxidation refers to the surface of the metal fastener through a chemical reaction to produce a layer of rust-proof film, the main role is rust, the other can also beautify the appearance.

Q: In the fastener industry, 1018 refers to what material: Low-carbon steel. Domestic in accordance with the Japanese standard to create the SWRCH18A. (JIS G 3507) Carbon C: 0.15 to 0.20 Silicon Si: 0.17 to 0.37 Mn Mn: 0.60 to 0.90 Phosphorus P: ≤0.030 Sulfur S: ≤0.035 The carbon content of the material is relatively low and can not be quenched and tempered. Used for cold piers to make low-grade screws. Pull up the strength of 450Mpa.

Q: For the commonly used standard parts, for some of the quality of good or bad, how to distinguish,: If it is important, random to do one or two destructive pull test, their own press with a simple tooling, pay attention to safety, if their own, to the physical and chemical test units or heat treatment of the brothers can do. You can also go to the supplier to monitor the sampling of such a similar test (contract agreed).

Q: What is the name of the screw (fastener)?: Screw, it was also called "screw" [screw], "screw" (screw). In fact, the screw is known, and the screws, screw rods are different from each other. Screws are generally called wood screws; is the tip of the kind of tip, pitch larger, generally used to tighten wood parts, plastic parts. Screw is a screw (mechanical screw), is the front of the kind of flat head, pitch is small, uniform, generally used to fasten the metal, machine parts.

Q: Does the fastener include screws?: Fastener fasteners are also known as standard parts on the market and are a generic term for a class of mechanical parts that are used when two or more parts (or components) are tightly connected as a unit. It is characterized by a wide variety of specifications, performance purposes vary, and standardization, serialization, the degree of generalization is very high. Fasteners are the most widely used mechanical base pieces and are in great demand.

Q: What fasteners are manufacturers in China?: (11) Ningbo Ningli high-strength fasteners Ltd.(12) Ningbo Donggang Fastener Manufacturing Co., Ltd.

Q: Will the stainless steel fastening standard parts of the national standard code and name?: Because the fastener is a standard part, so the size of stainless steel fasteners and ordinary fastener size is the same, other standard GB / T 5267.4-2009 fastener surface treatment corrosion-resistant stainless steel passivation treatment

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