id,nome_comercial,designacao_imperial,norma_principal,diametro_polegadas,diametro_mm_equivalente,comprimento_pes,comprimento_metros,threads_per_inch_tpi,tipo_rosca,classe_resistencia,limite_escoamento_ksi,limite_escoamento_mpa,limite_ruptura_ksi,limite_ruptura_mpa,alongamento_percent,carga_tencao_maxima_lbf,carga_tencao_maxima_tonf,dureza_hv,acabamento,aplicacoes,compatibilidade_porca,torque_recomendado_ft_lb,torque_recomendado_nm,fabricantes_brasil,preco_pe_2025,preco_barra_6m_2025,obs_criticas
bar_imp_1_4_20ft,"Threaded Rod 1/4""-20 × 20ft","1/4""-20 UNC",ASTM A193 B7,"1/4""",6.35,20,6.1,20,UNC (Unified National Coarse),B7,105,724,125,862,18,2100,0.95,300-380,Galvanizado a quente,"Chumbadores leves, estruturas pequenas","Porca 1/4""-20 UNC Hex Nut",8,11,"Gerdau, Confab, Tecel",3.8,72.0,Menor diâmetro B7 - Rosca UNC 20 TPI
bar_imp_3_8_20ft,"Threaded Rod 3/8""-16 × 20ft","3/8""-16 UNC",ASTM A193 B7,"3/8""",9.525,20,6.1,16,UNC,B7,105,724,125,862,18,4800,2.18,300-380,Galvanizado a quente,"Chumbadores padrão, consoles leves","Porca 3/8""-16 UNC Hex Nut",20,27,"Gerdau, Confab, Tecel",5.2,98.0,Tamanho pequeno comum - TPI 16
bar_imp_1_2_20ft,"Threaded Rod 1/2""-13 × 20ft","1/2""-13 UNC",ASTM A193 B7,"1/2""",12.7,20,6.1,13,UNC,B7,105,724,125,862,18,8900,4.04,300-380,Natural/Galvanizado,"Pilares leves, consoles médios","Porca 1/2""-13 UNC Heavy Hex",35,47,"Gerdau, Confab, Tecel, Brasil Parafusos",7.5,142.0,Padrão leve B7 - TPI 13 (mais fina que métrica)
bar_imp_5_8_20ft,"Threaded Rod 5/8""-11 × 20ft","5/8""-11 UNC",ASTM A193 B7,"5/8""",15.875,20,6.1,11,UNC,B7,105,724,125,862,18,13900,6.31,300-380,Natural/Galvanizado,"Pilares médios, estruturas moderadas","Porca 5/8""-11 UNC Heavy Hex",55,75,"Confab, Tecel, Brasil Parafusos",10.5,199.0,Médio padrão - TPI 11
bar_imp_3_4_20ft,"Threaded Rod 3/4""-10 × 20ft","3/4""-10 UNC",ASTM A193 B7,"3/4""",19.05,20,6.1,10,UNC,B7,105,724,125,862,18,20200,9.16,300-380,Natural/Galvanizado,"Chumbador pilar padrão, ancoragem estrutural","Porca 3/4""-10 UNC Heavy Hex A563 DH",75,102,"Gerdau, Confab, Tecel, Brasil Parafusos",14.0,265.0,"⭐ PADRÃO BRASIL 3/4"" - TPI 10 - Mais comum"
bar_imp_7_8_20ft,"Threaded Rod 7/8""-9 × 20ft","7/8""-9 UNC",ASTM A193 B7,"7/8""",22.225,20,6.1,9,UNC,B7,105,724,125,862,18,27700,12.57,300-380,Natural/Galvanizado,"Pilares pesados, consoles críticos","Porca 7/8""-9 UNC Heavy Hex A563 DH",105,142,"Confab, Tecel, Brasil Parafusos",17.0,322.0,Pesado - TPI 9 - Consoles críticos
bar_imp_1_20ft,"Threaded Rod 1""-8 × 20ft","1""-8 UNC",ASTM A193 B7,"1""",25.4,20,6.1,8,UNC,B7,105,724,125,862,18,36300,16.47,300-380,Natural/Galvanizado,"Mega estruturas, offshore, plataformas","Porca 1""-8 UNC Heavy Hex A563 DH",155,210,"Gerdau, Confab, Tecel",21.0,398.0,⭐ SEGUNDA MAIS USADA - TPI 8 - Mega estrutura
bar_imp_1_1_8_20ft,"Threaded Rod 1-1/8""-7 × 20ft","1-1/8""-7 UNC",ASTM A193 B7,"1-1/8""",28.575,20,6.1,7,UNC,B7,105,724,125,862,18,45700,20.73,300-380,Natural,"Offshore profundo, fundações extremas","Porca 1-1/8""-7 UNC Heavy Hex",190,258,"Confab, Tecel",26.0,493.0,Muito pesado - TPI 7 - Offshore profundo
bar_imp_1_1_4_20ft,"Threaded Rod 1-1/4""-7 × 20ft","1-1/4""-7 UNC",ASTM A193 B7,"1-1/4""",31.75,20,6.1,7,UNC,B7,105,724,125,862,18,56400,25.59,300-380,Natural,"Fundações ultra críticas, plataformas petroleiras","Porca 1-1/4""-7 UNC Heavy Hex",240,325,"Confab, Tecel",32.0,606.0,Ultra pesado - TPI 7 - Plataformas petroleiras
bar_imp_1_1_2_20ft,"Threaded Rod 1-1/2""-6 × 20ft","1-1/2""-6 UNC",ASTM A193 B7,"1-1/2""",38.1,20,6.1,6,UNC,B7,105,724,125,862,18,81300,36.88,300-380,Natural,"Mega estruturas offshore, fundações submarinas","Porca 1-1/2""-6 UNC Heavy Hex",330,447,"Confab, Tecel (sob encomenda)",45.0,853.0,MÁXIMA B7 - TPI 6 - Sob encomenda 30+ dias
bar_imp_3_4_inox_20ft,"Threaded Rod 3/4""-10 Inox A4-80 × 20ft","3/4""-10 UNC Stainless",ISO 3506 A4-80,"3/4""",19.05,20,6.1,10,UNC,A4-80 AISI 316L,80,552,100,689,30,16100,7.31,150-200,Liso inoxidável 316L,"Marítimo extremo, offshore salino","Porca 3/4""-10 Stainless A4-80",60,81,"Sakamura, InterMet",38.0,720.0,Inox 316L molibdênio - Marítimo extremo - 50+ anos
bar_imp_1_inox_20ft,"Threaded Rod 1""-8 Inox A4-80 × 20ft","1""-8 UNC Stainless",ISO 3506 A4-80,"1""",25.4,20,6.1,8,UNC,A4-80 AISI 316L,80,552,100,689,30,29000,13.16,150-200,Liso inoxidável 316L,"Offshore profundo, submarino, naval","Porca 1""-8 Stainless A4-80",85,115,"Sakamura, InterMet",52.0,986.0,Ultra premium inox - Marine grade - Máxima corrosão