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{"title":"High Performance General PED Ss Flow Control Valve","imgUrl":"https:\/\/img.chinax.com\/nimg\/d0\/51\/2124e6867263e70a65a094fa7c23-200x200-1\/high_performance_general_ped_ss_flow_control_valve.jpg","attrs":{"Model Number":"GS","Certification":"API ,CE,PED, ISO","Place of Origin":"China or Europe","Minimum Order Quantity":"2pcs"}}
{"title":"Screwed Welded Clamp 150lb 3pcs Stainless Steel Ball Valve","imgUrl":"https:\/\/img.chinax.com\/nimg\/7c\/37\/459a535f7f3a672dc5a6227c055b-200x200-1\/screwed_welded_clamp_150lb_3pcs_stainless_steel_ball_valve.jpg","attrs":{"Certification":"API ,CE,PED, ISO","Place of Origin":"China","Minimum Order Quantity":"2pcs","Payment Terms":"TT, LC"}}
ASTM A276 TP316L Stainless Steel Round Bar , For Petrochemical Equipment
Overview
ASTM A276 Type 316L is a low‑carbon (L) molybdenum‑alloyed austenitic stainless steel round bar for general engineering use. It offers improved resistance to pitting and crevice corrosion versus 304/304L, excellent weldability, and good toughness down to cryogenic temperatures.
Designations: ASTM A276 (bars and shapes), ASTM A484 (general requirements), UNS S31603, EN 1.4404, X2CrNiMo17‑12‑2. For pressure-containing parts, ASTM A479 is often specified.
Typical chemical composition (wt%)
C ≤ 0.030
Cr 16.0–18.0
Ni 10.0–14.0
Mo 2.00–3.00
Mn ≤ 2.0, Si ≤ 1.0, P ≤ 0.045, S ≤ 0.030, N ≤ ~0.10
Key properties
Corrosion resistance: Strong general corrosion resistance; superior pitting/crevice resistance to 304L in chloride media due to 2–3% Mo. Not immune to chloride pitting/SCC, especially at elevated temperature; consider higher‑PREN alloys for aggressive seawater/brine.
Heat resistance: Good oxidation resistance in dry air up to about 870°C. Prolonged service in the 425–870°C range can reduce mechanical properties; L grade mitigates sensitization after welding.
Magnetism: Essentially non‑magnetic when annealed; can become slightly magnetic after cold work.
Weldability: Excellent; use matching fillers (e.g., ER316L/E316LSi). Post‑weld cleaning/passivation recommended; PWHT generally not required.
Machinability: Work‑hardening austenitic grade; use sharp tooling, positive feeds, and generous coolant. Free‑machining variants exist but standard 316L limits sulfur for corrosion performance.
Manufacturing and supply conditions
Processes: Hot‑finished and solution‑annealed & pickled (HRAP/black), cold‑drawn/bright, peeled/turned, centerless ground, precision ground, and polished.
Finishes: Black (as‑rolled), bright‑drawn, turned/peeled, centerless ground, polished (e.g., 180/240/320/400/600 grit), mirror on request.
Tolerances and QA: Dimensional and straightness tolerances per ASTM A484 (general requirements). Optional NDT (UT/eddy current), PMI, straightness control, low delta‑ferrite on request. MTC/COC to EN 10204 3.1 available.
Size range (typical offerings; customizable)
Diameters: ~3 mm to 500 mm (1/8″ to 20″).
Lengths: 3–6 m random (10–20 ft) or cut‑to‑length with tight straightness.
Precision tolerances (e.g., h9/h10/h11) and ground shafts available upon request.
Typical applications
Chemical and petrochemical equipment, heat exchangers, pumps and valves
Marine fittings and shafts, coastal architectural components
Food, beverage, and pharmaceutical process hardware
Pulp and paper, textile, and dyeing equipment
Cryogenic service and general engineering shafts/pins/fasteners
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...
