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{"title":"Heat Exchanger Stainless Steel Seamless Tube , ASTM A213, ASME SA213 , TP304","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/33\/4d\/ea4f234ba06b3f32ee77ae86fe79-200x200-1\/heat_exchanger_stainless_steel_seamless_tube_2c_astm_a213_2c_asme_sa213_2c_tp304_2f304l_2c_tp316_2f316l_2c_tp321_2f321h_2c_tp310s.jpg","attrs":{"Place of Origin":"China, USA, Korea, UE","Brand Name":"YUHONG SPECIAL STEEL","Certification":"ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008","Minimum Order Quantity":"100KGS"}}
{"title":"Heat Exchanger tube, U bend Type , Stainless Steel Heat Exchanger Tube ASTM 213,","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/c7\/41\/a8d3b163cbf61743fa5e1ccdd796-200x200-1\/heat_exchanger_tube_2c_u_bend_type_2c_stainless_steel_heat_exchanger_tube_astm_213_2c_asme_sa213_2c_astm_a789_2c_asme_sa789.jpg","attrs":{"Place of Origin":"China, Korea","Brand Name":"YUHONG","Certification":"ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008","Minimum Order Quantity":"100KGS"}}
{"title":"ASTM A861 GR.2 Titanium Alloy Seamless Pipe For Boiler Condenser Electric","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/17\/1d\/72557b066113e01905b80450c734-200x200-1\/astm_a861_gr_2_titanium_alloy_seamless_pipe_for_boiler_condenser_electric_appliance.jpg","attrs":{"Brand Name":"YUHONG","Model Number":"ASTM A861 Gr.2","Certification":"ISO,SGS,BV,ISO & SGS,ISO\/CE\/SGS","Place of Origin":"CHINA"}}
{"title":"ASME SB338 GR.7 \/ UNS R52400 Titanium Alloy Seamless Heat Exchanger Tube","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/57\/cb\/013fcba50a7d7b427fbe8ef70a11-200x200-1\/asme_sb338_gr_7_2f_uns_r52400_titanium_alloy_seamless_heat_exchanger_tube.jpg","attrs":{"Brand Name":"YUHONG","Model Number":"ASME SB338 Gr.7 Seamless Tube","Certification":"ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2015","Place of Origin":"China"}}
Grade 316 Stainless Steel Tubes or UNS S31600 Tubes are one of the most common grades of stainless steel offers good strength and heat resistant and oxidation resistance properties in continuous temperature service. The key properties of this material are its high chromium and medium nickel content making its resistance to oxidation, sulfidation and other forms of hot corrosion its main characteristics.
Grade 316 is the standard molybdenum-bearing grade, second in importance to 304 amongst the austenitic stainless steels. The molybdenum gives 316 better overall corrosion resistant properties than Grade 304, particularly higher resistance to pitting and crevice corrosion in chloride environments. It has excellent forming and welding characteristics. It is readily brake or roll formed into a variety of parts for applications in the industrial, architectural, and transportation fields.
Grade 316L, the low carbon version of 316 and is immune from sensitisation (grain boundary carbide precipitation). Thus it is extensively used in heavy gauge welded components (over about 6mm).
Specification
ASTM A213/A213M-21a Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes.
ASTM A249 / A249M : Standard Specification for Welded Austenitic Steel Boiler, Superheater Heat-Exchanger, and Condenser Tubes.
Other Standard : DIN 17456 , DIN 17458, EN10216-5, GOST 9940-81, GOST 9941-81, JIS-G3463...
Some of the quality tests carried out by us includes
Corrosion Test
Conducted only when specially requested by the client
Chemical Analysis
Test done as per required quality standards
Destructive / Mechanical Testing
Tensile | Hardness | Flattening | Flare | Flange
Reverse-bend and Re. flat tests
Carried out in full compliance with relevant standards & ASTM A-450 and A-530 norms, which ensures trouble-free expansion, welding & use at customers end
Eddy Current Testing
Done to detect homogeneities in subsurface by using Digital Flaw-mark Testing System
Hydrostatic Testing
100% Hydrostatic Testing carried out according to ASTM-A 450 norms for checking tube leakage, and biggest pressure we can support 20Mpa/7s .
Air Under Pressure Test
To check any evidence of air leakage
Visual Inspection
After passivation, every single length of tubes & pipes is subjected to thorough visual inspection by trained staff for detecting surface flaws & other imperfections
Supplementary Testing
Apart from the above mentioned tests, we also carry out on the manufactured products supplementary testing. The tests conducted under this include:
YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
