1～2 item / All 2 items
Parts that require high dimensional accuracy.
The "key component and inner cylinder" is a stainless steel part that requires high dimensional accuracy. It has small 4-hole and 5-hole features on the side, as well as a key insertion hole, with dimensions of φ10 (cylinder) × H36mm, and a hardened hardness of HRc55. 【Features】 ■ Made of SUS440C ■ Requires high dimensional accuracy *For more details, please refer to the catalog or feel free to contact us.
Measures against sulfuric acid and hydrochloric acid dew point corrosion of long inner tubes cooled by outside air. Confirmation of specifications and welds.
The inner tube of the chimney is susceptible to external environmental influences, and when the exhaust gas temperature drops or falls below the acid dew point during operation stoppage, localized thinning due to condensed sulfuric and hydrochloric acid can occur. Due to its long structure, material selection must consider not only corrosion allowance but also self-weight, wind and seismic loads, joints, and inspection and renewal methods. In the case of Nippon Steel's application, S-TEN1 with a nominal plate thickness of 6 to 12 mm is indicated for the inner tube of the chimney. S-TEN1 thick plates are designed to meet the mechanical properties of SM400A, but if JIS compliance is to be noted on the mill sheet for applications related to public works or building codes, prior specification before ordering is necessary. Dedicated welding materials, vertical and circumferential joints, drains, insulation, and inspection openings will be considered as a whole.
