Set 1
Q: What's the factory price range of ASTM A36 equal angle bars?
A: The factory price of ASTM A36 equal angle bars typically ranges from
500to
800 per metric ton, depending on size and order quantity. Smaller sizes (e.g., 20x20x3mm) are usually at the lower end, around
500−
600/ton, while larger sizes (e.g., 150x150x15mm) can cost
700−
800/ton. Bulk orders over 100 metric tons often qualify for 5%-10% discounts, bringing prices down further. Seasonal demand also affects pricing-prices tend to rise during peak construction seasons (spring and summer). Additionally, factors like raw material (iron ore) costs and transportation fees may cause slight fluctuations, so it's best to get a real-time quote from suppliers.
Q: How does SS400 differ from S235JR equal angle steel?
A: SS400 is a Japanese JIS standard carbon steel, while S235JR is a European EN standard carbon steel. SS400 has a minimum yield strength of 235 MPa, same as S235JR, but its tensile strength range (400-510 MPa) is slightly higher than S235JR's (360-510 MPa). Chemically, SS400 allows a higher manganese content (0.60-1.00%) compared to S235JR's (0.30-0.60%), which enhances its toughness. SS400 is widely used in Japanese-influenced markets or machinery, while S235JR is common in European construction projects. Both are cost-effective for light-to-medium structural use, and they can be substituted in non-code-specific projects.
Q: Is S345JR suitable for high-load equal angle applications?
A: Yes, S345JR is well-suited for high-load equal angle applications. It has a minimum yield strength of 345 MPa, significantly higher than basic grades like S235JR (235 MPa), enabling it to bear heavier loads without deformation. Its tensile strength (470-630 MPa) provides extra resistance to breaking under extreme stress. As a high-strength low-alloy (HSLA) steel, it offers good toughness, making it ideal for dynamic high-load scenarios like bridge bracing, industrial crane supports, and large building frames. Even with high strength, it retains excellent weldability, allowing easy fabrication into load-bearing structures. It's a cost-effective choice for projects needing more strength than S235JR but not the premium of Q420B.
Q: What sizes are available for Q420B equal angle bars?
A: Q420B equal angle bars are available in a range of sizes to meet heavy-duty needs. Common sizes start from 40x40x4mm and go up to 200x200x20mm. Smaller sizes (40x40x4mm to 75x75x8mm) are used for heavy machinery parts, while larger sizes (100x100x10mm to 200x200x20mm) suit large structural projects like stadium frames or offshore platforms. Thicknesses correspond to leg lengths-larger legs have thicker sections to maintain strength. Standard lengths are 6m, 9m, and 12m, with custom lengths up to 18m available for bulk orders. Availability may vary by supplier, with larger sizes often requiring a 1-2 week lead time due to specialized rolling.
Q: How to get the best factory price for steel angle bars?
A: To get the best factory price, start by ordering in bulk-suppliers offer higher discounts for quantities over 50-100 metric tons. Compare quotes from 3-5 different factories, focusing on those with their own rolling mills to avoid middleman fees. Timing is key-order during off-peak seasons (winter) when demand is low and prices are more competitive. Negotiate for combined shipping if ordering multiple sizes or grades, as this reduces transportation costs. Also, ask about cash payment discounts, as many factories offer 2%-3% off for upfront payments. Finally, confirm if the price includes basic packaging to avoid hidden fees.
Set 2
Q: Which is cheaper: S235JR or ASTM A36 equal angle bars?
A: Generally, S235JR equal angle bars are slightly cheaper than ASTM A36, with a price difference of 5%-10% per metric ton. S235JR's lower cost stems from its wider availability in European and Asian markets and simpler manufacturing requirements for manganese content. For example, S235JR may cost
480−
700/ton, while ASTM A36 ranges from
500−
800/ton. However, the price gap narrows for large orders (over 200 tons) or when sourced from regions with high ASTM A36 production (like the US). If your project doesn't require ASTM compliance, S235JR offers better value; for US-based projects, ASTM A36 may be more cost-effective due to lower shipping fees.
Q: Can SS400 equal angles replace S345JR for light heavy loads?
A: SS400 can replace S345JR only for very light heavy loads, not for moderate-to-heavy ones. SS400 has a yield strength of 235 MPa, much lower than S345JR's 345 MPa, so it can't withstand the same stress. For applications like small machinery supports or light shelving (loads under 500kg per bar), SS400 works and is cheaper. But for projects like medium-sized building frames or industrial conveyors (loads over 1000kg), S345JR is necessary to avoid deformation. SS400 also has lower tensile strength (400-510 MPa vs. S345JR's 470-630 MPa), increasing breakage risk under heavy loads. Substitution is only feasible if load calculations confirm SS400 meets safety requirements.
Q: What's the minimum order quantity for factory-priced Q420B?
A: The minimum order quantity (MOQ) for factory-priced Q420B equal angle bars is typically 10-20 metric tons. Most factories set this MOQ because Q420B is a high-strength grade that's less commonly ordered than basic grades, so they need to justify production runs. For standard sizes (e.g., 50x50x5mm, 80x80x8mm), some factories may accept 10 tons, while custom sizes or large dimensions require 20+ tons. Ordering above the MOQ often unlocks better prices-for example, 50 tons may get a 7% discount. If you need less than the MOQ, you may have to pay a premium or buy from distributors, which are more expensive than factory direct prices.
Q: How does S345JR's price compare to Q420B?
A: S345JR is cheaper than Q420B, with a price difference of 15%-25% per metric ton. S345JR usually costs
600−
900/ton, while Q420B ranges from
750−
1100/ton. The higher price of Q420B comes from its higher yield strength (420 MPa vs. S345JR's 345 MPa) and more complex alloying (it contains higher manganese and trace elements like niobium). The gap increases with size-larger Q420B angles (150x150mm+) have a bigger price difference due to stricter manufacturing tolerances. For projects that don't require Q420B's ultra-high strength, S345JR offers better value; for critical high-load applications, Q420B's premium is necessary.
Q: Are factory prices of steel angles inclusive of taxes?
A: Factory prices of steel angles usually do not include taxes, as tax rates vary by region, buyer type, and project purpose. Most factories quote "ex-works" prices, which cover production costs but exclude value-added tax (VAT), import duties, or sales taxes. For example, a Chinese factory may quote $600/ton ex-works for S235JR, with 13% VAT added if the buyer is based in China. For international buyers, import duties (often 5%-10% depending on the country) and local sales taxes are additional. It's crucial to clarify with the factory whether the quote is ex-works, FOB, or CIF, as FOB/CIF include shipping but still not local taxes. Always ask for a breakdown of all costs to avoid surprises.
Set 3
Q: Why is ASTM A36 popular despite higher prices?
A: ASTM A36 is popular despite higher prices because of its wide recognition and consistent quality across global markets. It meets strict ASTM standards for chemical composition and mechanical properties, ensuring reliability for critical projects. Its yield strength (250 MPa) and tensile strength (400-550 MPa) strike a balance for most structural needs, from building frames to machinery. It has excellent weldability and formability, making it easy for fabricators to work with. In regions like North America and the Middle East, ASTM compliance is often mandatory for construction codes, so buyers have no choice but to use it. Additionally, its availability from most major steel mills ensures steady supply, reducing project delays.
Q: What's the weight of 100x100x10mm S235JR equal angle?
A: A 100x100x10mm S235JR equal angle bar weighs approximately 15.12 kg per meter. The weight is calculated using the formula: weight (kg/m) = 0.00785 × (2×leg length - thickness) × thickness. Plugging in the numbers: 0.00785 × (2×100 - 10) × 10 = 0.00785 × 190 × 10 = 15.115 kg/m, rounded to 15.12 kg/m. A 6-meter length of this angle weighs ~90.72 kg, and a 12-meter length weighs ~181.44 kg. This weight is consistent for all carbon steel grades (ASTM A36, SS400) of the same size, as weight depends on volume, not alloy content. Suppliers provide weight charts for quick reference, which is essential for shipping cost calculations and load-bearing design.
Q: Can Q420B equal angles be used in outdoor structures?
A: Yes, Q420B equal angles can be used in outdoor structures, but they require corrosion protection like other carbon steels. Q420B itself doesn't have inherent corrosion resistance-its strength comes from alloying, not rust-resistant elements. The most effective protection is hot-dip galvanizing, which applies a zinc layer that prevents moisture from reaching the steel, providing 10-20 years of rust resistance. Painting with weather-resistant epoxy or polyurethane coatings also works for less harsh environments. For coastal areas with salt spray, regular maintenance (recoating every 3-5 years) is necessary. Q420B's high strength makes it ideal for outdoor heavy-duty structures like transmission towers or offshore platforms when properly protected.
Q: How long does it take to deliver factory-ordered SS400 angles?
A: Delivery time for factory-ordered SS400 equal angles ranges from 7 to 21 days, depending on order quantity and size. For standard sizes (e.g., 40x40x4mm, 50x50x5mm) and small orders (10-50 tons), factories can ship within 7-10 days if they have inventory. For custom sizes or large orders (100+ tons), production takes 10-14 days, plus 3-7 days for transportation. International delivery adds more time-shipping from Asia to Europe takes 20-30 days by sea. Peak seasons (March-August) may extend delivery by 3-5 days due to high demand. It's best to confirm the production and shipping timeline with the factory when placing the order, especially for time-sensitive projects.
Q: What's the difference between S345JR and Q420B in performance?
A: S345JR and Q420B differ primarily in strength and application scope. Q420B has a much higher yield strength (420 MPa vs. S345JR's 345 MPa) and tensile strength (520-680 MPa vs. S345JR's 470-630 MPa), making it suitable for ultra-high-load projects like large bridge components or heavy machinery frames. S345JR is better for medium-heavy loads, such as commercial building columns or industrial racks. Q420B has stricter impact toughness requirements (especially at low temperatures), while S345JR meets standard toughness needs. Q420B is more expensive and may require specialized welding techniques for thick sections, whereas S345JR is more cost-effective and easier to fabricate for most applications.
Set 4
Q: Do factories offer samples of ASTM A36 equal angles?
A: Yes, most factories offer samples of ASTM A36 equal angles, though policies vary. Many provide small samples (10-30cm lengths) for free, especially if you intend to place a large order later. For full-length samples (1-2 meters), factories may charge a nominal fee (usually
20−
50) to cover material and processing costs, which is often refundable upon placing a bulk order. Samples typically take 3-7 days to prepare and ship. When requesting samples, specify the size (e.g., 50x50x5mm) and any special requirements (e.g., galvanized finish). Samples allow you to check surface quality, dimensions, and weldability before committing to a large purchase, which is crucial for ensuring the product meets your needs.
Q: Is SS400 equal angle steel easy to weld and cut?
A: Yes, SS400 equal angle steel is very easy to weld and cut, making it a favorite for fabricators. Its low carbon content (0.20% max) and moderate manganese content (0.60-1.00%) ensure excellent weldability with common methods like MIG, TIG, and stick welding. No preheating is needed for sections under 25mm thick, and it requires only basic welding electrodes (e.g., E6013). Cutting SS400 is straightforward with standard tools-circular saws with metal blades, plasma cutters, or angle grinders produce clean edges with minimal effort. It doesn't crack or chip during cutting due to its good ductility. This ease of fabrication reduces labor costs and speeds up project timelines, which is why SS400 is widely used for custom metalwork.
Q: What affects the factory price of S235JR angle bars most?
A: The factory price of S235JR angle bars is most affected by raw material costs, especially iron ore prices, which account for 60%-70% of production costs. When iron ore prices rise (e.g., due to supply shortages), S235JR prices follow within 1-2 weeks. Order quantity is another key factor-bulk orders get 5%-15% discounts compared to small orders. Production capacity also plays a role: if factories are operating at full capacity, prices may increase due to high demand. Transportation costs (for raw materials and finished products) impact prices too, especially for factories far from mines or ports. Finally, government policies like export tariffs or environmental regulations can add to production costs, leading to higher prices.
Q: Can S345JR equal angles be painted for aesthetics?
A: Yes, S345JR equal angles can be painted for aesthetics, and proper preparation ensures a long-lasting finish. Start by removing mill scale, rust, and oil using sandblasting or wire brushing-this creates a rough surface for better paint adhesion. Apply a corrosion-inhibiting primer (e.g., epoxy primer) to prevent rust under the paint. Choose acrylic, polyurethane, or powder coatings for the topcoat-all bond well to S345JR and offer a smooth, glossy finish. Avoid painting without preparation, as the paint will peel off quickly. Painted S345JR angles are ideal for visible structures like building facades or decorative railings, combining strength with an attractive appearance. The paint also adds an extra layer of corrosion protection.
Q: What's the maximum length of Q420B equal angle bars?
**A: The maximum length of Q420B equal angle bars is typically 18 meters, though some factories can produce up to 24 meters for special orders. Standard lengths are 6m, 9m, and 12m, which are easier to transport and handle. Longer lengths (15m-18m) are used for large structural projects to reduce the number of joints, improving strength and reducing fabrication time. However, longer lengths may incur higher shipping costs due to oversized load fees.
