Q355B ألواح الصلب عالية القوة ذات السبائك المنخفضة جيجابايت/ت 1591 Structural Steel Plate
Higher yield than Q235 with micro-alloyed toughness — the weight-saving choice for bridges, buildings, machines and heavy structures.
معيار: جيجابايت/ت 1591GRADE: س355بTHICKNESS 2–100 mm
قوة العائد
≥355 MPa
قوة الشد
470-630 ميجا باسكال
IMPACT ENERGY
≥34 J @ −20°C
01 · نظرة عامة على المنتج
Q355B is a low-alloy high-strength structural steel to GB/T 1591, micro-alloyed with niobium, الفاناديوم والتيتانيوم. It delivers about 50 % higher yield strength than Q235B, allowing lighter sections and reduced welding, while keeping good weldability and excellent low-temperature toughness.
WHY CHOOSE Q355B
مادة واحدة, one grade — Q355B only. Micro-alloyed chemistry, guaranteed 355 العائد ميجا باسكال, certified impact toughness and full traceability via mill certificate.
02 · الميزات الرئيسية
High Yield Strength
≥355 MPa yield enables thinner, lighter sections — up to ~30 % weight saving versus Q235 designs.
Excellent Weldability
Low carbon equivalent (CEV) keeps HAZ hardness low — weldable without pre-heat in most shop conditions.
Low-Temperature Toughness
Guaranteed ≥34 J at −20 °C (grade B) for safe service in cold climates and dynamic loading.
Weight Saving
Higher design stress cuts plate thickness and tonnage, reducing material, freight and fabrication cost.
Certified Quality
Mill test certificate with full chemistry and mechanicals supplied for every batch; third-party inspection available.
Cut-to-Size
Plasma and flame cutting to drawing — plates, blanks and profiled parts ready for use.
ملحوظة: Micro-alloy elements Nb, الخامس, Ti added singly or in combination per GB/T 1591. Cu ≤ 0.40 %, N ≤ 0.012 %, Al ≥ 0.015 %. Mill test certificate supplied with every batch.
المدرفلة على الساخن, mill scale surface; shot-blasted & primed, or oiled, available on request
Custom width, طول, edge preparation and profiling available — specify your requirement in the inquiry.
07 · التطبيقات
Steel bridges & gantry structures
إطارات البناء & high-rise columns
Engineering machinery & الرافعات
بناء السفن & marine structures
أوعية الضغط & صهاريج التخزين
Wind power towers & المعدات الثقيلة
08 · يعالج & التعبئة والتغليف
Flame / قطع البلازما, التفجير بالرصاص, edge milling and painting available. Plates packed on steel or wooden pallets, steel-banded and protected for ocean shipment.
توصيل
Sea freight with full export documentation (سي آي, بل, شركة, إم تي سي, third-party inspection if required) and loading supervision.
Need Q355B plate for your structure?
Tell us thickness, عرض, length and quantity — we will confirm stock, السعر والتوصيل داخل 24 ساعات.
تقدم
