| 1. General Terms | | | | requirements, in order, by the supply and demand by |
| ① delivery status | | | | the two sides signed the agreement supply |
| Refers to the final delivery of products or final heat | | | | technology and in the contract. Therefore, these |
| treatment of plastic deformation state. Generally not | | | | conditions are also known as the Association |
| heat-treated hot-rolled or cold drawn, said delivery | | | | Conditions of the proposed guarantee. There is an |
| (rolled) state or manufactured state; after delivery of | | | | agreement to ensure conditions for the product, as |
| the said heat treatment | | | | have to follow suit. |
| Heat treatment, or under the category called | | | | ④ approved |
| normalizing heat treatment (normalization), quenching, | | | | Standard in the "batch" refers to a test unit, the |
| solution, annealed. Order, the delivery status required | | | | inspection lot. If approved delivery unit group, said |
| in the contract. | | | | the consignments. When large quantities of delivery, |
| ② the actual weight of shipment or delivery | | | | a delivery batch can consist of several inspection lot; |
| according to theoretical weight | | | | when the delivery volume |
| Actual weight - delivery, the weight of their products | | | | Is low, a test batch can be divided into several |
| is based on weight (weighing) weight delivery; | | | | delivery batch. |
| Theoretical weight - delivery, the weight of their | | | | "Batch" is usually composed of the following |
| products is based on the nominal size steel weight | | | | provisions (see the standard): |
| calculated. The formula is as follows (theoretical | | | | A, each batch should be the same grade (steel |
| weight required by the delivery person is required in | | | | grade), with furnaces (tank) number or numbers with |
| the contract): | | | | the mother furnace, with specifications and with the |
| Stainless steel pipe weight per meter of the theory | | | | heat treatment system (furnace) is composed of |
| (the density of steel is 7.85kg/dm3) formula: | | | | stainless steel pipe fittings. |
| W = 0.02466 (D-S) S | | | | B, for high quality carbon steel pipe, fluid pipe, can be |
| The formula: W - stainless steel pipe fittings | | | | different furnaces (pot) in the same grade, with the |
| theoretical weight per meter, kg / m; | | | | specifications and the same heat treatment (furnace) |
| D - stainless steel pipe fittings of nominal diameter, | | | | is composed of stainless steel pipe fittings. |
| mm; | | | | C, welded stainless steel pipe fittings each batch |
| S - stainless steel pipe fittings of nominal wall | | | | should be the same grade (Grade), stainless steel |
| thickness, mm. | | | | tube with standard composition. |
| ③ guarantee conditions | | | | ⑤ high quality steel and high-quality steel |
| The provisions of the current standard test items | | | | In GB/T699-1999 and GB/T3077-1999 standards, |
| and to ensure compliance with the standard | | | | with the back of his trademark "A" character who, |
| specification, called the guarantee conditions. Ensure | | | | for the high quality steel, contrary to the general high |
| that the terms be divided into: | | | | quality steel. |
| A, the basic guarantee conditions (also known as a | | | | High quality steel in the following part or all of |
| necessary condition). Regardless of whether the | | | | superior quality steel: |
| customers in the contract. Standards required by the | | | | A, narrowing the range of ingredients; |
| provisions of the inspection, and to ensure test | | | | B, to reduce the harmful elements (such as sulfur, |
| results meet the standard requirements. | | | | phosphorus, copper) content; |
| Such as chemical composition, mechanical properties, | | | | C, to ensure high purity (which requires less |
| size deviation, surface quality and inspection, pressure | | | | non-metallic inclusion content); |
| test or flattening or flaring process performance such | | | | D, ensure high mechanical properties and processing |
| experiments are a necessary condition. | | | | properties. |
| B, the agreement guarantees conditions: standard | | | | ⑥ vertical and horizontal |
| conditions, in addition to the basic guarantees, there | | | | Standard said longitudinal direction is parallel with the |
| are "demand-side requirements based upon mutual | | | | processing (ie processing along the direction of) |
| agreement of supply and demand, and in the | | | | persons; horizontal direction is perpendicular with the |
| contract note? Quot; or" When the demand side | | | | processing (processing the stainless steel tube axial |
| requirements ... ... should be | | | | direction). |
| In the contract "; also customers, the basic | | | | Impact work to do experiment, vertical fracture of |
| guarantee of the standard conditions of tightening | | | | the specimen and processing for the vertical direction. |
| the requirements (such as composition, mechanical | | | | It is called horizontal fracture; transverse fracture of |
| properties, size deviation, etc.) or by test items (such | | | | the sample parallel to the direction for and processing, |
| as stainless steel pipe fittings | | | | so that vertical fracture. |
| Ellipticity, uneven wall thickness, etc.). The terms and | | | | |